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Mid-term Revision 1
Fill in the blanks according to the phonetic transcriptions.
It is successful for us to on the reform of farm tools. /r s :t /
At work, he was trapped in a cycle of endless meetings. /'b :r /
I need to know the duration for my in advance. / prezn te n/
The immense of the Sahara spans the northern region of Africa. /'dez t/
Tom off the people and got on the bus. / ld d/
He was so and he drank a whole pint of beer down. / θ sti/
There's little time left for us to finish the project. /'pre s/
The course is over a five-week period. /spred/
The flag of China was on the summit of Mount Qomolangma. /re zd/
There is a general that smoking is harmful. / we n s/
What are you seeking from this change of job / d vɑ nt d z/
Lucy values her time to read and relax alone. / pra v t/
The children the words after the teacher in chorus. /r p :t d/
flashes lit up the night sky during the summer storm. / la tn /
My grandparents are a loving married for 50 years. /'k pl/
We hope to maintain her close and friendship. /s p t /
The majority of the city's attended the festival. / p pju le n/
When the temperature falls under 0℃, water will /fri z/
The teacher encouraged students to express their freely in class. / p nj nz/
The of her speech left the audience deeply inspired. /k n'klu: n/
Regular exercise can both physical health and mental well-being. / ben f t/
The book is filled with and unusual features. /f n t st k/
A foreigner is usually with many customs of a country. / nf m li (r)/
We found a number of shared interests. /s pra z /
studies have shown significant progress in this field. / r :snt/
The football match ended with an unexpected finally. /r 'z lt/
Their friendship over shared experiences and mutual trust. / d :p nd/
Jerry is still about both his job and his hobbies. / kre z /
Kate what would happen if her parents found her. /'w nd d/
John lost his health, and his difficulties increased. / e f (r)/
II. Choose the best answer.
( )1. He carried the heavy box on his shoulder. Which is correct for the underlined part
A. /a / B. /e / C. /a / D. / /
( )2. The coat was spread out across the bed. Which is correct for the underlined part
A. / / B. /e/ C. / / D. / :/
( )3. They haven’t given me any reason to complain. Which is correct for the underlined part
A. / / B. / / C. /a / D. /e /
( )4. The couple decided to adopt a child. Which is correct for the underlined part
/ / B. / / C./ / D. /a /
( )5. I didn't open your precious jewelry box! Which is correct for the underlined part
A. /t / B. / / C. / / D./ /
( )6. Which of the following underlined parts is different in pronunciation from the others
A. headset B. treatment C. repeat D. dream
( )7. Which of the following underlined parts is different in pronunciation from the others
A. support B. result C. virus D. supply
( )8. Which of the following underlined parts is different in pronunciation from the others
A. population B. disabled C. familiar D. shake
( )9. Which of the following underlined parts is different in pronunciation from the others
A. benefit B. metro C. connect D. result
( )10. Which of the following underlined parts is different in pronunciation from the others
A. shine B. digital C. limited D. hidden
( )11. Which of the following underlined parts is different in pronunciation from the others
A. hamburger B. fantastic C. laptop D. magician
( )12. Which of the following underlined parts is different in pronunciation from the others
A. object B. beyond C. wonder D. drop
( )13. Which of the following underlined parts is different in pronunciation from the others
A. preschooler B. cartoon C. tooth D. stood
( )14. Which of the following underlined parts is different in pronunciation from the others
A.thirsty B. health C. either D. bluetooth
( )15. Which of the following underlined parts is different in pronunciation from the others
A. private B. population C. disadvantage D. annoying
( )16. Which of the following underlined parts is different in pronunciation from the others
A. corner B. network C. inform D. support
( )17. Which of the following underlined parts is different in pronunciation from the others
A. bathe B. thirst C. therefore D. neither
( )18. Which of the following underlined parts is different in pronunciation from the others
A. muddy B. puppy C. understand D. fully
( )19. Which of the following underlined parts is different in pronunciation from the others
A. shined B. raised C. touched D. warned
( )20. Which of the following underlined parts is different in pronunciation from the others
A.beyond B. type C. supply D. satisfy
Ⅲ. Complete the sentence with the right word according to the picture.
1. The camels walked slowly across the hot .
The man used a stick to navigate the busy street.
Doctors study how the spreads from person to person.
Key:
Ⅰ. 根据音标填空（Fill in the blanks according to the phonetic transcriptions）
1-5 research/ boring/ presentation/ desert/ shouldered
6-10 thirsty/ precious/ spread/ raised/ awareness
11-15 advantages/ private/ repeated/ Lightning
16-20 couple/ support/ population/ freeze/ opinions
21-25 conclusion/ benefit/ fantastic/ unfamiliar/ surprising
26-30 Recent/ result/ depends/ crazy/ wondered/ therefore
Ⅱ. 选择最佳答案（Choose the best answer）
D（解析：“shoulder” 中划线部分 “ou” 发音为 / /）
B（解析：“spread” 中划线部分 “ea” 发音为 /e/）
D（解析：“complain” 中划线部分 “ai” 发音为 /e /）
A（解析：“couple” 中划线部分 “ou” 发音为 / /）
C（解析：“precious” 中划线部分 “ci” 发音为 / /）
A（解析：A 选项 “headset” 中 “ea” 发 /e/，B “treatment”、C “repeat”、D “dream” 中 “ea” 均发 /i /）
B（解析：ACD 选项中 “u” 发 / /，B “result”中“u”发/ /)
C（解析：ABD 选项 中 “a” 发 /e /，C “familiar” 中 “a” 发 / /）
D（解析：ABC 选项“e” 均发 /e/, D中发/ /）
A（解析：A 选项 “shine” 中 “i” 发 /a /，B “digital”、C “limited”、D “hidden” 中 “i” 均发 / /）
D（解析：D 选项 “magician” 中 “a” 发 / /，A “hamburger”、B “fantastic”、C “laptop” 中 “a” 均发 / /）
C（解析：ABD 选项 中 “o” 发 / /，C “wonder”中 “o”发 / /）
D（解析：D 选项 “stood” 中 “oo” 发 / /，A “preschooler”、B “cartoon”、C “tooth” 中 “oo” 均发 /u /）
C（解析：C 选项 “either” 中 “th” 发 / /，A “thirsty”、B “health”、D “bluetooth” 中 “th” 均发 /θ/）
B（解析：ACD 选项中 “a” 发 / /，B “population”中 “a”发 /e /）
B（解析：B 选项 “network” 中 “or” 发 / /，A “corner”、C “inform”、D “support” 中 “or” 均发 / /）
B（解析：B 选项 “thirst” 中 “th” 发 /θ/，A “bathe”、C “therefore”、D “neither” 中 “th” 均发 / /）
D（解析：D 选项 “fully” 中 “u” 发 / /，A “muddy”、B “puppy”、C “understand” 中 “u” 均发 / /）
C（解析：C 选项 “touched” 中 “ed” 发 /t/，A “shined”、B “raised”、D “warned” 中 “ed” 均发 /d/，清辅音后 “ed” 发 /t/，浊辅音 / 元音后发 /d/）
A（解析：A 选项 “beyond” 中 “y” 发 /j/，B “type”、C “supply”、D “satisfy” 中 “y”均发 /a /）
Ⅲ. 根据图片补全句子（Complete the sentence with the right word according to the picture）
desert（解析：图片为骆驼，结合 “hot” 可知是 “沙漠”）
blind（解析：图片中人物用拐杖，推测是 “盲人”，“blind” 表示 “失明的”）
virus（解析：结合 “from person to person”（人与人之间传播），推测是 “病毒”，“virus” 符合语境）
Mid-term Revision 2
I. Complete the sentences with the given words in their proper forms.
1. The chips were too __________, so I drank a lot of water after eating them. (salt)
2. I found a __________ blue seashell on the beach last summer vacation. (rarely)
3. The old professor will give the __________ himself. (present)
4. This English dictionary is very __________ for my daily study and homework. (use)
5. The speech was so __________ that I almost fell asleep on the chair. (bore)
6. Washing hands with soap removes harmful __________ from your skin. (chemistry)
7. The doctor gave me medicine as __________ for my cold. (treat)
8. __________ found that eating vegetables every day keeps people healthy. (research)
9. The teacher gave __________ hints to help us solve the math problem. (direct)
10. She lost five __________ after exercising for three months. (kilo)
11. I __________ knocked the vase against the wall and broke it. (care)
12. Tom still hadn't __________ recovered from his illness. (full)
13. After I have been lecturing for two hours, I get __________ and tired. (thirst)
14. The small town faces __________ water supply, so people must save it. (limit)
15. Raising __________ about recycling helps protect our environment. (aware)
16. She spoke __________ so everyone could understand her simple instructions. (clear)
17. John keeps his diary __________ and never shows it to anyone else. (privacy)
18. The washing machine has two serious __________. (advantage)
19. Lack of exercise can lead to an __________ body and mind. (health)
20. The manager listened to all the guests' __________ about the noisy rooms. (complain)
21. Please accept my apology for any __________ caused. (convenient)
22. We bought __________ food at the supermarket for quick dinners. (freeze)
23. Remember not to make fun of the __________ in life. (able)
24. I wanted a copy of the letter, so I __________ it twice. (typist)
25. The disease was __________ during a routine check-up. (detective)
26. Miss Guo will __________ parents about the school trip next Monday. (information)
27. The __________ to the Internet was interrupted for several hours. (connect)
28. The cat found a __________ toy under the sofa and played with it happily. (hide)
29. I've come to the __________ that Kate is a gifted artist. (conclude)
30. Eating vegetables every day can __________ your health in many ways. (beneficial)
31. The little boy felt nervous in the __________ classroom on his first school day. (familiar)
32. We had a __________ time at the beach building sandcastles. (fantasy)
33. It was __________ that he finished writing a novel in only twenty days. (surprise)
34. The teacher showed us __________photos from her trip to the Great Wall. (recently)
35. Mr Chen's explanation __________ our understanding of the problem yesterday. (deep)
36. Tom __________ if his lost dog would come back home safely. (wonderful)
37. Reading books helps improve our __________ of different cultures. (understand)
38. The __________ __________ were rolling in front of the fire. (puppy)
39. Let us deal with the problem from a fresh __________ . (direct)
40. Miss Lin's __________ speech moved everyone to tears. (touch)
plete the passage with the linking words of the adverbial clause of time.
My Busy Weekend
Last Saturday was very busy. __________ I woke up at 7:00 a.m., the sun was shining brightly. __________ I was eating breakfast, my mom reminded me to clean my room. __________ I finished cleaning, I went to the park with my friends. At the park, we played basketball __________ it started raining. __________ the rain stopped, we decided to go home. __________ I left, I promised to meet them again next weekend. __________ I got home, my little brother was watching TV. __________ he was laughing at the cartoon, I helped my mom cook dinner. __________ __________ we ate, I did my homework __________ 10:00 p.m. That night, I fell asleep __________ I lay down!
plete the passage with the proper form of the words in brackets.
Benny Bear's Bumpy Ride
Benny Bear wanted __________(make) the best bicycle in the forest. He decided __________ (build) it himself! First, he needed __________ (find) strong bamboo. He asked his friend Squirrel __________ (help) him carry the wood. It was hard __________(put) the wheels on. Benny tried __________ (hammer) the nails, but the wheels kept __________ (fall) off. "Don't worry!" giggled Rabbit. "I can teach you __________ (fix) it!" She showed Benny how to tie the wheels with vines. Benny was happy __________ (learn) a new trick. Soon, the bicycle was ready __________ (ride)! Benny invited everyone __________ (watch) his first ride. He promised __________ (go) slowly. But oh no! He forgot __________ (steer) properly! Bump! Benny rolled straight into a mud puddle! All the animals rushed __________(pull) him out. Benny shook his wet fur and laughed: "Next time, I'll remember __________(look) at the road!" That night, Benny planned __________ (build) a bigger bicycle... with a seat for muddy friends!
Mid-term Revision 2
I.
1. salty 2. rare 3. presentation 4. useful 5. boring 6. chemicals 7. treatment
8. Researchers 9. direct 10. kilos 11. carelessly 12. fully 13. thirsty
14. limited 15. awareness 16. clearly 17. private 18. disadvantages 19. unhealthy
plaints 21. inconvenience 22. frozen 23. disabled 24. typed 25. detected
26. inform 27. connection 28. hidden 29. conclusion 30. benefit 31. unfamiliar
32. fantastic 33. surprising 34. recent 35. deepened 36. wondered 37. understanding
38. puppies 39. direction 40. touching
II.
When; While; After; until; After; Before; When; While; After; until; as soon as
III.
to make; to build; to find; to help; to put; to hammer; falling; to fix; to learn; to ride; to watch; to go; to steer; to pull; to look; to build
Mid-term Revision 3
Rewrite the following sentences as required.
The museum ticket included access to the special gallery. (改为否定句)
The museum ticket __________ __________ access to the special gallery.
The hiker set off at dawn to reach the mountain summit before noon. (改为否定句)
The hiker __________ __________ off at dawn to reach the mountain summit before noon.
I've tried to turn the air-conditioner off and on again. (改为否定句)
I __________ __________ to turn the air-conditioner off and on again.
They have the chance to learn about the history of the country. (改为否定句)
They __________ __________ the chance to learn about the history of the country.
The manager led the team effectively during the project deadline. (改为否定句)
John __________ __________ the team effectively during the project deadline.
May's got much time for healthy outdoor activities. (改为否定句)
May __________ __________ much time for healthy outdoor activities.
QR codes are widely used for mobile payments in China. (改为一般疑问句)
__________ QR codes __________ widely for mobile payments in China
The boy had to finish his homework before playing video games. (改为一般疑问句)
__________ the boy __________ to finish his homework before playing video games
Tom's explanation deepened my confusion about the math problem. (改为一般疑问句)
__________ Tom's explanation __________ your confusion about the math problem
I was crazy about collecting seashells in the childhood. (改为一般疑问句)
__________ __________ crazy about collecting seashells in the childhood
Max's wondered how birds know where to migrate. (改为一般疑问句)
__________ Max __________ how birds know where to migrate
I'll ask the technical support team to help Tom. (改为一般疑问句)
__________ __________ ask the technical support team to help Tom
The crowd cheered excitedly as the runner crossed the finish line. (对画线部分提问)
__________ __________ the crowd cheer excitedly
To do this job well, we need to take a special training. (对画线部分提问)
__________ __________ you need to take a special training
They kept discussing the project details until midnight. (对画线部分提问)
__________ __________ did they keep discussing the project details
As soon as she arrived, the meeting started immediately. (对画线部分提问)
__________ __________ the meeting start immediately
The room was fully decorated for Christmas celebration. (对画线部分提问)
__________ __________ the room decorated for Christmas celebration
New ideas were introduced to change this situation. (对画线部分提问)
__________ __________ new ideas introduced
Firemen can see the environment clearly with the help of video information. (对画线部分提问)
__________ __________ firemen see the environment clearly
Tom used to spend too much time watching videos. (对画线部分提问)
__________ did Tom use to spend too much time __________
Water from rivers or lakes gets cleaned in a plant. (对画线部分提问)
__________ __________ water from rivers or lakes get cleaned
If there is not enough rain, the river will disappear someday. (对画线部分提问)
__________ will __________ if there is not enough rain
We apologize for the inconvenience during the repair work. (改为反义疑问句)
We apologize for the inconvenience during the repair work, __________ __________
Kate rarely eats fast food because it's unhealthy. (改为反义疑问句)
Kate rarely eats fast food because it's unhealthy, __________ __________
John spread butter on his toast before eating it. (改为反义疑问句)
John spread butter on his toast before eating it, __________ __________
You were aware of the meeting time change. (改为反义疑问句)
You were aware of the meeting time change, __________ __________
If you get up earlier, you will have more time for exercise. (保持句义不变)
__________ __________ you wake up, __________ __________ time you will have for exercise.
This book is both interesting and full of useful tips. (保持句义不变)
This book is __________ interesting __________ full of useful tips
The teacher asked us to hand in our papers at once. (保持句义不变)
The teacher asked us to hand in our papers __________ __________ .
We left the house after the rain stopped completely. (保持句义不变)
We __________ leave the house __________ the rain stopped completely.
My brother often hated vegetables when he was a little kid. (保持句义不变)
My brother __________ __________ hate vegetables when he was a little kid.
The team made full use of the tools to finish the project. (保持句义不变)
The tools were __________ __________ by the team to finish the project.
Tom complained about his broken phone to the customer service. (保持句义不变)
Tom __________ a __________ about his broken phone to the customer service.
We couldn't see the road clearly because of the rain. (保持句义不变)
The rain made __________ hard for us __________ see the road clearly.
To go over notes before exams every day is important for students. (保持句义不变)
__________ important for students to __________ notes before exams every day.
We thought of a way to solve the problem quickly. (保持句义不变)
We __________ __________ with a way to solve the problem quickly.
Before he did homework, Tom always checks the notes carefully. (保持句义不变)
__________ __________ homework, Tom always checks the notes carefully.
Mid-term Revision 3
1. didn't include
2. didn't set
3. haven't tried
4. don't have
5. didn't lead
6. hasn't got
7. Are; used
8. Did; have
9. Did; deepen
10. Were you
11. Did; wonder
12. Will you
13. When did
14. Why do
15. How long
16. When did
17. How was
18. Why were
19. How can
20. What; doing
21. Where does
22. What; happen
23. don't we
24. does she
25. didn't he
26. weren't you
27. The earlier; the more
28. not only; but also
29. right away
30. didn't; until
31. used to
32. made full use of
33. made; complaint
34. it; to
35. It's; go over
36. came up
37. Before doing
Mid-term Revision 4
Choose the best answer
Schools teach kids to respect ________ disabled and offer help kindly.
A. a B. an C. the D. /
In________conclusion, eating healthy food is important for our daily life.
A. a B. an C. the D. /
When you see________unfamiliar thing, ask questions to learn about it.
a B. an C. the D. /
The teacher warned ________ of the heavy rain coming this afternoon.
A. us B. our C. ours D. ourselves
Funny jokes always make ________ enjoyable to be with her.
A.it B. that C. there D. this
I found ________ end of the rope was tied to a big tree.
A. another B. the other C. others D. other
Lucy searched online with hope but found________results about the old book.
A. few B. little C. a few D. a little
She felt ________ with her phone because the screen kept freezing.
A. anything wrong B. something wrong
C. wrong anything D. wrong something
________my opinion, summer is the best season for swimming and travel.
A. On B. With C. From D. In
Please keep an eye ________ the baby while I cook dinner, Jimmy.
A. to B. for C. on D. with
Tom fixed the broken chair________his own without any help.
A. on B. in C. to D. of
Anna finally found the answer________ the question in her textbook.
A. of B. in C.with D. to
Kate shared enough________about the event with her friends.
A. idea B. information C. suggestion D. opinion
This device helps drivers keep them________by alerting to dangers.
A. safety B. safe C. safely D. save
Adding fireworks to the party to make it ________ for everyone.
A. excitement B. excitedly C. excited D. exciting
We will go hiking if it ________ tomorrow according to the plan.
A. doesn't rain B. won't rain C. isn't rain D. hasn't rained
Sally ________ the email as soon as I finished the report.
A. sends B. sent C. will send D. has sent
It is believed that the team ________ great success this year.
achieves B. achieved C.will achieve D. has achieved
The store________closed since the owner retired two months ago.
A. was B. is C. would be D. has been
They________ packed the glass cups so they wouldn't break.
A. careless B. carelessly C. careful D. carefully
The higher we climbed,________the air felt on our faces.
A. cold B. colder C. the colder D. the coldest
Math problems seem________if you practise them every day.
A. most easily B. more and more easily
C. more and more easy D. easier and easier
We enjoyed every minute of it ________ the movie was long.
A. though B. but C. so D. because
Kitty practiced daily.________, her piano skills improved quickly.
A. However B. Therefore C. Besides D. Instead
________for the marathon, she runs 10 kilometers every morning.
A. Prepare B. Preparing C. Prepared D. To prepare
Don't forget________off the phone during the performance.
A. turning B. to turn C. turned D. turn
The class teacher warned the students not________ during the exam.
A. cheat B. cheating C. to cheat D. cheated
They spend time ________ at the animal shelter to help stray dogs.
A. volunteer B. to volunteer C. volunteered D. volunteering
Mr Chen encouraged met________ he debate team to build confidence.
A. joining B. to join C. joined D. join
They are likely ________ the trip if the weather gets worse.
A. to cancel B. canceling C. cancel D. canceled
No matter________she travels, she buys a postcard to remember the trip.
A. what B. how C. where D. why
He saved money every month________he could afford his dream car.
A. while B. until C. as D. after
--I hold that we should value every drop of water in life.
--________
A. That's a great idea. B. I couldn't agree more.
C. That's all right. D. I'm glad you like it.
-- Excuse me, I want to complain about the soya milk.
--________
A. What's the problem B. How do you like it
C. Do you agree with me D. What does it look like
--I won the first prize in the singing contest, dad.
--________
A. Go ahead. B. My pleasure. C. Never mind. D. Well done.
--We've worked out a device which can save 100 liters of water daily.
--________
A. With pleasure. B. You're welcome.
C. Take care. D. I'm proud of you.
Keys：
1-5:CDBAA 6-10:BABDC 11-15:ADBBD 16-20: ABCDD
21-25:CDABD 26-30:BCDBA 31-36:CBBADD
Mid-term Revision 5
I. Fill in the blanks according to the phonetic transcriptions.
The little girl ________ what made the stars twinkle at night / w nd d/
The ________ of reading include gaining knowledge and so on. / d vɑ nt d z/
Regular exercise can ________both physical and mental health. / ben f t/
II.Choose the best answer.
Which of the following underlined parts is different in pronunciation from the others
A. couple B. shoulder C. touching D. encourage
The nurse promised to keep ________ eye on the sleeping baby carefully.
A. a B.an C. the D./
The teacher will inform us ________ the exam schedule tomorrow morning,
A. with B. to C. of D. from
As soon as the rain stops, we ________ out for a picnic together.
A. will go B. go C. have gone D. went
The loud music makes________hard for me to focus on my homework.
A. that B. there C. this D. it
While Tom ________ in the street, he came across a classmate of mine.
A. walked B. was walking C. would walk D. walks
I planned to go hiking,________the heavy rain canceled our trip.
A. but B. or C.and D. so
--I believe robots will control the world in the future.--________.
A. It's my pleasure. B. Great, you deserve it.
C. I'm afraid I don't agree. D. It doesn't matter.
plete the sentences with the given words in their proper forms.
Students must wear gloves when handling dangerous ________carefully. ( chemical)
The police________drivers about icy road conditions this morning. ( warning )
It was ________to see my shy cousin perform on stage confidently. ( surprise )
He suddenly became ________of the strange silence in the empty hallway. ( awareness )
The sudden rain brought unexpected ________to our outdoor picnic. ( convenient )
plete the following passage with the words or phrases in the box. Each can only be used once.
A. private B. make up C. includes D. death E.limited F.highly
We never think about it, but we all leave behind digital footprints every day. This I emails, social media accounts, cloud-stored photos, books, videos and music, and even virtual money.
All these things 2our “digital legacy”. What should we do with it all when we pass on from this life Can it be passed down
Apple is now testing a new digital legacy service. With it, people can pick “legacy contacts (联系人)”. These friends and family can visit their Apple accounts after their3 . This way, people can pass down photos, videos and other valuable data.
Still, others think some parts of our digital legacy are too4 to be shared.“Whether social media accounts , like WeChat and Sina Weibo, can be inherited (继承) is still questionable, because they are5personal," said Wang Cheng, a professor at Peking University.
________2.________3.________4._________5.________
V. Choose the best answer and complete the passage.
As we all know, history is an important part of human civilization(文明), and it helps us understand the past and shape the future. However, it is not easy for us to experience the past. With the____1____of modern technology,digital technology has been used to change the way we look at history. It can bring the past to life in a new way.
Digital technology allows people to take virtual (虚拟的) tours of historical sites. This means that people can now experience what it was like to live in ancient times without____2____being there. This is an exciting way for students to learn about history and different cultures rather than just reading textbooks or sitting in the classroom.
What's more , digital technology has helped better protect historical artworks and documents. Museums can____3____important documents and artworks in digital forms. This makes it easier to share them with people all around the world. Also, digital technology can help fix and repair historical artworks, otherwise they would be lost over time.
Digital technology can also help historians do research. With useful modern tools, historians can quickly study historical materials and____4____new findings. This has opened up new areas of historical research, which may____5____new discoveries in the future. All in all, digital technology has changed the way we learn about and understand history.
A. touch B. type C.corner D. rise
A. only B. hardly C. fully D. actually
A.pour B. store C.inform D.press
A. come up with B. connect with C. satisfy with D. get along with
A. focus on B. depend on C. lead to D. stick to
Keys：
I:1.wondered 2.advantages 3.benefit
II:1-4:BBCA 5-8:DBAC
III:1.chemicals 2.warned 3.surprising 4.aware 5.inconvenience
IV: CBDAF
V. DDBAC

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