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Unit 5 Understanding ideas-Rules基础巩固练习
一、按要求写出单词的适当形式
smell (v./n. 闻；气味) → ________ (adj. 有臭味的)
noise (n. 噪音) → ________ (adj. 吵闹的)；________ (adv. 吵闹地)
honest (adj. 诚实的) → ________ (adv. 诚实地)；________ (n. 诚实)
reduce (v. 减少) → ________ (v. 反义词，增加)
fool (v./n. 愚弄；傻瓜) → ________ (adj. 愚蠢的)
responsibility (n. 责任) → ________ (adj. 有责任的)
根据句意从方框中选择合适的短语并用其正确形式填空
My little sister ________ when she saw the cute puppy suddenly.
Could you please not ________ in the room My grandma is sleeping.
He opened his schoolbag and ________ a storybook to read during the break.
Our new house is ________ a big park, so we can go for a walk easily.
The students ________ by the river last Sunday. They had a great time.
When the firecracker made a loud sound, the little boy ________ with both hands.
Closing the door and windows can ________ from the busy street.
She studies English every morning ________ improve her speaking skills.
The boy sitting behind me kept ________ in class, which made me angry.
After being asked a difficult question by the teacher, Tom’s face became ________.
She ________ and found her best friend standing behind her with a gift.
My mom asked me to ________ my little brother while she went shopping.
This new restaurant serves ________ delicious food ________ friendly service.
Before giving a speech, she ________ to calm herself down.
My father bought ________ milk on his way home yesterday.
三、单项选择
We should keep quiet in the library ________ disturb others.
A. so as not to B. in order that C. because of D. thanks to
—Why did you ________ your notebook just now
—Because I wanted to write down the important information.
A. take off B. take out C. take away D. take up
The old man lives alone, but his neighbors often help him ________ his garden.
A. look at B. look for C. look after D. look like
When the bell rang, all the students ________ and ran out of the classroom.
A. turned around B. jumped up C. covered ears D. took breaths
—I’m very nervous about the exam tomorrow.
—________ and believe in yourself. You will do well.
A. Take a deep breath B. Play loud music C. Kick your seat D. Jump up in surprise
This story is ________ interesting ________ educational. All the children like it.
A. either; or B. not just; but also C. neither; nor D. both; or
Don’t ________ the little boy. He just made a small mistake.
A. fool B. foolish C. honesty D. honest
It’s important for everyone to ________ the rules in public places.
A. follow B. break C. make D. change
四、根据汉语意思完成句子
为了赶上早班车，他每天早上 6 点起床。
He gets up at 6 a.m. every day ________ ________ ________ catch the early bus.
当听到这个好消息时，她惊讶地跳了起来。
She ________ ________ ________ ________ when she heard the good news.
请帮我照看一下我的书包，我去买一瓶水。
Please help me ________ ________ my schoolbag. I’ll go to buy a bottle of water.
他不仅会弹吉他，还会唱歌。
He can ________ ________ play the guitar ________ ________ sing.
演讲前，她深呼吸了一下，让自己平静下来。
She ________ ________ ________ ________ to calm herself down before the speech.
五、阅读短文，根据短文内容选择最佳答案
Last weekend, I went to the cinema with my best friend, Lily. We planned to watch a new cartoon movie that we both looked forward to.
When we got to the cinema, we first bought two tickets and a packet of popcorn. Then we walked into the screening room and found our seats. Just as the movie was about to start, a boy sitting next to Lily began to play loud music on his phone. Lily politely asked him to turn it off, but he didn’t listen. Instead, he kept laughing and talking with his friend loudly.
Many people around us felt angry, but no one said anything. At that moment, Lily took a deep breath, turned around and said to the boy again, “Excuse me, could you please keep quiet We are all here to watch the movie.” This time, the boy’s face turned as red as a tomato. He quickly turned off his phone and stopped talking.
After the movie, I asked Lily why she was brave enough to speak up. She said, “We should stand up to bad behaviour, not just keep silent. Following public rules is important for everyone.” I agreed with her. That day, I not only watched a great movie but also learned an important lesson.
What did the writer and Lily plan to do last weekend
A. Go to a park. B. Watch a cartoon movie. C. Have a picnic. D. Buy popcorn.
What did the boy next to Lily do when the movie was about to start
A. He played loud music on his phone. B. He ate popcorn loudly.
C. He kicked Lily’s seat. D. He left the screening room.
How did the boy feel after Lily asked him to keep quiet the second time
A. Angry. B. Happy. C. Embarrassed. D. Bored.
What did the writer learn from Lily that day
A. How to buy movie tickets. B. To stand up to bad behaviour.
C. How to make friends with others. D. To watch more cartoon movies.
Which of the following is TRUE according to the passage
A. The writer and Lily bought one ticket for the movie.
B. The boy turned off his phone after Lily asked him the first time.
C. Many people in the screening room felt angry with the boy.
D. Lily was too scared to speak to the boy.
参考答案
一、按要求写出单词的适当形式
smelly 2. noisy; noisily 3. honestly; honesty 4. increase 5. foolish 6. responsible 7. picnic 8. breathe
二、根据句意从方框中选择合适的短语并用其正确形式填空
jumped up in surprise 2. play loud music 3. took out 4. next to 5. were on a picnic 6. covered his ears 7. block the noise 8. so as to 9. kicking my seat 10. as red as a tomato 11. turned around 12. look after 13. not just; but also 14. took a deep breath 15. a packet of
三、单项选择
A 2. B 3. C 4. B 5. A 6. B 7. A 8. A
四、根据汉语意思完成句子
so as to / in order to 2. jumped up in surprise 3. look after 4. not just; but also 5. took a deep breath 6. Except for
五、阅读短文，根据短文内容选择最佳答案
B 2. A 3. C 4. B 5. CUnit 5 Developing Ideas-Are you safe online 基础巩固练习
一、按要求写出单词的适当形式
spread (v. 传播；扩散) → ________ (过去式)；________ (过去分词)
lawyer (n. 律师) → ________ (n. 法律)
urgent (adj. 紧急的) → ________ (n. 紧急情况；迫切性)
personal (adj. 个人的) → ________ (n. 人)
private (adj. 私人的；私密的) → ________ (n. 隐私)
careless (adj. 粗心的) → ________ (adj. 反义词，细心的)；________ (adv. 细心地)；________ (v. 关心；在意)
aware (adj. 意识到的；知道的) → ________ (n. 意识；认识)
trust (v./n. 信任；信赖) → ________ (adj. 可信的；受信任的)
enemy (n. 敌人；仇敌) → ________ (复数形式)
behave (v. 表现；行为举止) → ________ (n. 行为；举止)
二、根据句意从方框中选择合适的短语并用其正确形式填空
Please ________ this glass of juice. It’s very full and might spill.
My grandpa often ________ and talks about his childhood with us.
When she feels sad, she always ________ her sister ________ because they are very close.
Don’t ________ on social media, such as your birthday or family photos.
He is ________ now because he forgot to finish his project and the teacher is angry with him.
Our teacher told us some useful tips to ________, like not clicking strange links.
After chatting online for a year, they finally decided to meet ________ in a coffee shop.
We can share our secrets with ________ because they will never tell others.
I lost my classmate’s phone number, so I can’t ________ her now.
When walking alone at night, you must ________ and stay in bright places.
You should never share your address or phone number with an ________. It’s dangerous.
The little boy ________ in the library by running and shouting. The librarian stopped him at once.
For Tom, solving this math problem is ________ because he practices a lot every day.
We should ________ making mistakes when we write English compositions.
It’s important to ________ your passwords ________. Don’t tell them to anyone else.
You don’t have to ________ the difficult situation ________. We are here to help you.
If you have trouble with your homework, don’t be afraid to ________ from your teachers.
三、单项选择
We should ________ our personal photos private to protect our privacy online.
A. keep B. take C. make D. let
—My mom can’t find her old friend. Do you know how to ________ her
—Maybe she can search for the friend’s name on social media.
A. get in touch with B. think 20 years back C. face to face D. be aware of
It’s not easy to ________ all mistakes in the exam, but we can try our best to be careful.
A. finish B. avoid C. practice D. forget
When you are ________, you can call your parents or teachers for help.
A. in hot water B. a piece of cake C. stay safe D. behave badly
—I’m worried about the English test tomorrow.
—Don’t worry! You’ve studied hard. For you, it will be ________.
A. in hot water B. face to face C. a piece of cake D. online stranger
We should ________ the risks of talking to online strangers. It’s not always safe.
A. be careful with B. be aware of C. turn to D. ask for
The little girl didn’t want to ________ the scary dog alone, so she held her mom’s hand tightly.
A. face B. spread C. trust D. behave
He ________ when he was young, but now he is very polite and helpful.
A. behaved badly B. kept private C. got in touch D. turned to others
四、根据汉语意思完成句子
为了在网上保持安全，我们不应该向网上陌生人透露个人信息。
To ________ ________ ________, we shouldn’t share personal information with ________ ________.
回想 20 年前，人们主要通过电话或信件与朋友取得联系。
________ 20 years back, people mainly ________ ________ ________ ________ friends by phone or letter.
当你陷入困境时，不要独自面对，你可以向可信赖的朋友求助。
When you are ________ ________ ________, don’t ________ the problem ________. You can ________ ________ ________ ________ for help.
他非常细心地保管自己的密码，因为他知道保护隐私很重要。
He ________ ________ ________ his passwords because he knows it’s important to ________ his privacy.
与网上聊天相比，面对面交流能让我们更好地了解彼此。
Compared with chatting online, ________ ________ ________ can help us understand each other better.
五、阅读短文，根据短文内容选择最佳答案
Nowadays, more and more students use the Internet to study, chat or play games. While the Internet brings convenience, it also has some risks. So it’s important for students to learn how to stay safe online.
First, never post your personal information online, such as your home address, phone number or school name. Online strangers may use this information to hurt you. Second, be aware of strange links or messages. Don’t click them, because they may have viruses that can steal your data. Third, keep your passwords private. Don’t tell your passwords to anyone except your parents.
If you meet a problem online, like being bullied by an online stranger, don’t face it alone. You can turn to your trusted friends, parents or teachers for help. Remember, asking for help is not a sign of weakness. It’s a smart way to solve problems.
Also, don’t forget that face-to-face communication is more meaningful than online chatting. Spend more time with your family and real-life friends. In this way, you can enjoy the Internet safely and happily.
What is the main idea of the passage
A. How to use the Internet to study.
B. How to stay safe online.
C. How to make friends online.
D. How to send online messages.
Which of the following is NOT personal information mentioned in the passage
A. Home address. B. Phone number. C. School name. D. Favorite color.
Why shouldn’t we click strange links online
A. Because they are boring.
B. Because they may have viruses.
C. Because they are too long.
D. Because they cost a lot of money.
Who can we turn to for help if we are bullied online
A. Online strangers. B. Viruses. C. Trusted friends. D. Strange links.
What does the writer think of face-to-face communication
A. It’s less meaningful than online chatting.
B. It’s more meaningful than online chatting.
C. It’s as meaningful as online chatting.
D. It’s not important at all.
参考答案
一、按要求写出单词的适当形式
spread; spread 2. law 3. urgency 4. person 5. privacy 6. careful; carefully; care 7. awareness 8. trusted 9. enemies 10. behaviour
二、根据句意从方框中选择合适的短语并用其正确形式填空（调整后答案）
be careful with 2. thinks 20 years back 3. turns to; for help 4. post personal information 5. in hot water 6. stay safe online 7. face to face 8. trusted friends 9. get in touch with 10. be aware of strangers 11. online stranger 12. behaved badly 13. a piece of cake 14. avoid 15. keep; private 16. face; alone 17. ask for help
三、单项选择
A 2. A 3. B 4. A 5. C 6. B 7. A 8. A
四、根据汉语意思完成句子
stay safe online; online strangers 2. Think; got in touch with 3. in hot water; face; alone; turn to trusted friends 4. is careful with; keep 5. face-to-face communication
五、阅读短文，根据短文内容选择最佳答案
B 2. D 3. B 4. C 5. BUnit6 Developing ideas-Iron Girl 基础巩固练习
一、按要求写出单词的适当形式
danger（n. 危险）→ ________（adj. 危险的）；________（v. 使处于危险中）
warning（n. 警告；警示）→________ （v. 警告；提醒）；________（adj. 受到警告的）
iron（v. 熨烫；n. 铁）→ ________（adj. 熨烫好的）；________（n. 熨烫工作）
fashion（n. 时尚；流行款式）→ ________（adj. 时尚的；流行的）；________（adv. 时尚地）
bleed（v. 流血；出血）→ ________（v. 过去式 / 过去分词）；________（adj./n. 流血的；出血）；________（n. 血；血液）
uncomfortable（adj. 不舒服的）→ ________（adj. 反义词，舒服的）；________（adv. 舒服地）；________（n. 不舒服；不适）
encouraging（adj. 鼓舞人心的）→ ________（v. 鼓励；激励）；（adj. 感到鼓舞的）；________（n. 鼓励；激励）
honour（n. 荣誉；光荣）→ ________（n. 美式拼写）；________（adj. 光荣的；可敬的）
wound（n. 伤口；v. 使受伤）→ ________（adj./v. 受伤的；伤害）
heroine（n. 女英雄；女主角）→ ________（n. 男英雄；男主角）；________（adj. 英雄的；英勇的）；________（n. 英雄主义；英勇行为）
二、根据句意从方框中选择合适的短语并用其正确形式填空
The photo of the cute cat ________ on the street, so many people stopped to take pictures of it.
He ________ a soldier, but now he works as a doctor in a hospital.
The brave firefighter ________ in the fire accident, but he never gave up on life.
Don't let small difficulties ________. Keep trying and you will succeed.
After the accident, she learned to ________ and even took part in sports competitions.
________ her family and friends, she finally got through the hard time.
The shy girl decided to ________ and give a speech in front of the whole class.
He trained hard for months and finally finished his first ________ last weekend.
Many people like to ________ their daily lives ________ to keep in touch with friends.
The volunteers are trying their best to help ________ rebuild their homes after the flood.
Teachers always ________ students ________ be brave and confident when facing problems.
All the students are ________ the summer camp, which will start next month.
It's ________ to be chosen as the representative of our school to attend the meeting.
We should ________ challenges ________ instead of running away from them.
________, we must keep safe when we go out alone at night.
For many people, their mothers are ________ because moms always protect them.
He was proud to ________ in the opening ceremony of the sports meeting.
三、单项选择
The doctor told him to stay in bed because he ________ a lot in the accident.
A. bled B. bleed C. bleeding D. blood
With the help of his teachers, he ________ of his fear of speaking English and became a good speaker.
A. came out of the shadows B. broke his dream
C. lost his leg D. drew his attention
—Why is she so excited
—Because it's ________ for her to meet her favorite singer in person.
A. a great honour B. a half marathon C. an artificial leg D. disaster survivors
My parents always ________ me ________ try new things, even if I might fail.
A. encourage; to B. share; on C. look forward; to D. face; with
He ________ a basketball player, but now he works as a coach because of an injury.
A. used to be B. is used to be C. used to being D. is used to being
________ his teammates, he kept practicing and finally won the game.
A. Without the support of B. With the support of
C. In the shadow of D. On the social media of
We should ________ our mistakes ________ and learn from them.
A. face; with courage B. carry; the torch
C. break; our dream D. lose; our leg
She likes to ________ her happy moments ________, so her friends can know about her life.
A. draw; attention B. live; with an artificial leg
C. share; on social media D. come; out of the shadows
四、根据汉语意思完成句子
在老师的鼓励下，他决定参加这次半程马拉松比赛。
________ ________ ________ his teacher, he decided to take part in this ________ ________.
她过去是一名舞者，但一场事故让她失去了一条腿，打破了她的舞蹈梦。
She ________ ________ ________ a dancer, but an accident made her ________ ________ ________ and ________ ________ ________.
最重要的是，我们要勇敢面对生活中的困难，而不是躲在阴影里。
________ ________, we should ________ difficulties in life ________ ________ instead of staying in the shadows.
能被选为这次活动的火炬手，对他来说是极大的荣誉。
It's ________ ________ ________ for him to be chosen as the torch bearer of this activity to ________ ________ ________.
志愿者们正在帮助灾难幸存者重建家园，他们的行为鼓舞了很多人。
Volunteers are helping ________ ________ rebuild their homes, and their actions have ________ many people ________ help others.
五、阅读短文，根据短文内容选择最佳答案
Lily is a 25-year-old girl who loves running. She used to be a professional runner and dreamed of winning a national competition. However, a car accident last year changed her life—she lost her right leg and had to live with an artificial leg.
At first, Lily was very sad. She stayed at home all day and refused to meet anyone. She thought her running dream was broken. But with the support of her family and friends, she slowly came out of the shadows. Her coach encouraged her to try running with the artificial leg, and she decided to give it a try.
Every day, Lily trained hard. It was uncomfortable at first, but she never gave up. After six months of training, she took part in a half marathon for disabled people. Many people drew their attention to her and cheered for her. Finally, she finished the race and even won the third prize.
Now, Lily often shares her story on social media. She wants to encourage other disaster survivors or people with disabilities to face life with courage. She says, "Everyone has difficulties, but above all, we should never lose hope. You can be the heroine of your own life."
What did Lily use to be
A. A coach. B. A professional runner. C. A doctor. D. A volunteer.
Why did Lily have to live with an artificial leg
A. Because she was born with a disability.
B. Because she had a car accident.
C. Because she got sick.
D. Because she hurt her leg in a race.
How did Lily get through the hard time at first
A. By staying alone at home.
B. With the support of her family and friends.
C. By giving up her running dream.
D. By winning a competition.
What did Lily do after six months of training
A. She became a coach.
B. She stopped running forever.
C. She took part in a half marathon and won the third prize.
D. She shared her story on social media.
What does Lily want to tell others through her story
A. To give up when facing difficulties.
B. To face life with courage and never lose hope.
C. To become a professional runner.
D. To share stories on social media.
参考答案
一、按要求写出单词的适当形式
dangerous; endanger 2. warn; warned 3. ironed; ironing 4. fashionable; fashionably 5. bled; bleeding; blood 6. comfortable; comfortably; discomfort 7. encourage; encouraged; encouragement 8. honor; honorable 9. wounded 10. hero; heroic; heroism
二、根据句意从方框中选择合适的短语并用其正确形式填空
drew people's attention 2. used to be 3. lost his leg 4. break your dream 5. live with an artificial leg 6. With the support of 7. come out of the shadows 8. half marathon 9. share; on social media 10. disaster survivors 11. encourage; to 12. looking forward to 13. a great honour 14. face; with courage 15. Above all 16. the heroine of their lives 17. carry the torch
三、单项选择
A 2. A 3. A 4. A 5. A 6. B 7. A 8. C
四、根据汉语意思完成句子
With the encouragement of; half marathon 2. used to be; lose her leg; break her dance dream 3. Above all; face; with courage 4. a great honour; carry the torch 5. disaster survivors; encouraged; to
五、阅读短文，根据短文内容选择最佳答案
B 2. B 3. B 4. C 5. BUnit6 Understanding ideas-A lost city 基础巩固练习
一、按要求写出单词的适当形式
lost（adj. 丢失的；迷路的）→ ________（v. 丢失；失去）
scared（adj. 害怕的，恐惧的）→ ________（adj. 吓人的，可怕的）；________（v. 使害怕，使恐惧）
shut（v. 关闭；合上）→ ________（过去式）；________（过去分词）
shocking（adj. 令人震惊的）→________ （adj. 感到震惊的，表人的感受）；________（n./v. 震惊；使震惊）
coach（n. 教练；长途汽车）→ ________（复数形式）
thick（adj. 厚的；浓的）→ ________（adj. 反义词，薄的；瘦的）
historical（adj. 历史的；与历史相关的）→ ________（n. 历史；历史学）
reaction（n. 反应；回应）→ ________（v. 反应；回应）
service（n. 服务；接待）→ ________（v. 服务；提供）
terrible（adj. 糟糕的；可怕的）→ ________（adv. 糟糕地；可怕地）
二、根据句意从方框中选择合适的短语并用其正确形式填空
The firemen ________ the burning house to save the little girl inside.
My mom usually ________ me ________ at 7 a.m. on school days.
It's raining heavily. You can't ________; you'll get wet.
Don't leave the door open ________. The cold wind will come in.
We need to finish our homework ________, or we'll miss the party.
Just ________, and you'll see the library on your left.
The little boy ________ his head ________ when he couldn't answer the teacher's question.
A big ________ came and covered the sun, making the sky dark.
The workers are trying to make the lift ________ slowly to pick up people on the first floor.
She ________ help him because he lied to her before.
Hurry up! Don't ________ your umbrella ________. It will rain soon.
The news of the victory ________ the whole city in a few hours.
The thick smoke from the factory was so bad that it seemed to ________.
The forest ________ trees, so it's easy to get lost there.
They had to walk ________ because they forgot to take their umbrellas.
________, the rain stopped and the sun came out again.
All the people were ________ when they waited for the results of the exam.
The family tried to ________ the noisy city and move to a quiet village.
三、单项选择
The little girl was so scared that she ________ to move.
A. refused B. agreed C. wanted D. decided
You mustn't ________ the old books ________ when you move to the new house. Don't throw them away.
A. leave; behind B. take; away C. put; down D. pick; up
—How can I get to the post office
—________, and you'll find it at the end of the street.
A. Turn left B. Go straight ahead C. Move down D. Spread over
The sky ________ dark clouds, and it's going to rain.
A. is thick with B. is full of C. is thick in D. is filled with
After the earthquake, people were ________, waiting for news of their family members.
A. in heavy showers B. between hope and fear C. after a while D. by six o'clock
The fire ________ the building quickly, so everyone tried to ________ it.
A. spread over; get away from B. rushed into; stay outside
C. turned into; leave behind D. moved down; refuse to
He ________ his son ________ this morning, so his son was late for school.
A. woke; up B. didn't wake; up C. left; behind D. didn't leave; behind
The movie was so ________ that everyone was ________ after watching it.
A. shocking; shocked B. shocked; shocking C. terrible; terribly D. thick; thin
四、根据汉语意思完成句子
他拒绝和我们一起去公园，因为他要在家照顾妹妹。
He ________ ________ ________ to the park with us because he had to look after his sister at home.
过了一会儿，风变小了，我们又能去外面玩了。
________ ________ ________, the wind became weaker, and we could go out to play again.
到7点钟的时候，所有的学生都已经到达了学校。
________ ________ ________, all the students had already arrived at school.
乌云遍布天空，把白天变成了黑夜。
Dark clouds ________ ________ the sky and ________ ________ ________ ________.
她害怕把手机落在家里，所以出门前总是检查一遍。
She is afraid to ________ her phone ________ at home, so she always checks it before going out.
五、阅读短文，根据短文内容选择最佳答案
One afternoon, Lisa was doing her homework at home. Suddenly, the sky turned dark. A big dark cloud spread over the town, and it started to rain heavily.
Lisa's mom was outside, so Lisa was worried. She wanted to call her mom, but she couldn't find her phone. She remembered she left it in the park this morning. "Oh no! I left my phone behind," Lisa said to herself. She decided to go to the park to get it, but the rain was too heavy. She couldn't stay outside for even one second without an umbrella.
Just then, Lisa heard a knock on the door. It was her mom! Her mom had an umbrella and a bag. "I saw your phone in the park and brought it back," her mom said. Lisa was so happy. Then, they sat by the window and watched the rain. After a while, the rain stopped, and a rainbow appeared.
Lisa learned a lesson that day: never leave important things behind.
What was Lisa doing when the sky turned dark
A. She was playing in the park. B. She was doing her homework.
C. She was looking for her phone. D. She was waiting for her mom.
Why was Lisa worried
A. Because she couldn't find her homework.
B. Because her mom was outside in the heavy rain.
C. Because she lost her umbrella.
D. Because the rain was too heavy to go out.
Where did Lisa leave her phone
A. At home. B. In the park. C. At school. D. In the shop.
Who brought Lisa's phone back
A. Lisa herself. B. A stranger. C. Lisa's mom. D. Lisa's friend.
What lesson did Lisa learn that day
A. Don't play in the rain. B. Always take an umbrella when it rains.
C. Never leave important things behind. D. Don't stay outside for a long time.
参考答案
一、按要求写出单词的适当形式
lose 2. scary; scare 3. shut; shut 4. shocked; shock 5. coaches 6. thin 7. history 8. react 9. serve 10. terribly
二、根据句意从方框中选择合适的短语并用其正确形式填空
rushed into 2. wakes; up 3. stay outside 4. for even one second 5. by six o'clock 6. go straight ahead 7. moved; from side to side 8. dark cloud 9. move down 10. refused to 11. leave; behind 12. spread over 13. turn day into night 14. is thick with 15. in heavy showers 16. After a while 17. between hope and fear 18. get away from
三、单项选择
A 2. A 3. B 4. A 5. B 6. A 7. B 8. A
四、根据汉语意思完成句子
refused to go 2. After a while 3. By 7 o'clock 4. spread over; turned day into night 5. leave; behind
五、阅读短文，根据短文内容选择最佳答案
B 2. B 3. B 4. C 5. C

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