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Lesson 25 Let's Do an Experiment！
一、单项选择
1．We did ____ experiment in physics class.
A．a B．an C．any D．/
2．Please fill the bottle ____ water.
A．with B．of C．in D．for
3．—Could you tell me the ____ of making such tasty cakes?
—Well, I just follow the instructions in the cookbook.
A．time B．method C．cost D．menu
4．He has ____ arms now and is able to pick the table up with one hand.
A．weakest B．weaker C．strongest D．stronger
5．It's cold outside.____your jacket, Tom.
A．Put off B．Put on C．Take off D．Take on
6．When I got to the bus stop, I missed the early bus and I had to ____ the next one.
A．give up B．keep off C．call off D．wait for
7．(易错)—Are you feeling better now?
—Yes. I' m ____ to go to school.
A．good enough B．enough good
C．well enough D．enough well
8．—Have you returned the book to the library yet?
—Not yet. Don't worry. I ____ it soon.
A．return B．returned
C．have returned D．will return
9．I don't know the man ____ is standing at the gate.
A．不填 B．which C．that D．whom
10．—Can I have a look at your photos, please?
—____.
A．Sure, here you are B．Don't mention it
C．I can't agree with you D．I'm sorry to hear that
二、用所给词的适当形式填空
11．Let's ____(pour) the water into the container.
12．Over the years I've come to the ____(conclude) that she's a very great musician.
13．The boy is ____(call)Jimmy. He is lovely.
14．Do you think that he could ____(possible) be right?
15．Take your ____ (raincoat), children! It's raining outside.
三、根据句意及汉语提示完成句子
16．人类社会的进步不但取决于人们掌握的科学知识，还取决于他们的创新精神。
The development of human society depends on not only people's ____ ____
but also their creative spirit.
17．为了查明原因，我把那个盒子倒了过来。
In order to find out the reason, I ____ the box ____ ____.
18．坐直，并且把你们的手从桌子上拿开。
Sit straight, and ____ your hands ____ the desk.
19．他发现空气的压强那么大。
He ____ that the air ____ is so strong.
20．你准备好给大家解释一下这个正确答案了吗？
____ you ____ to explain the ____ answer?
答案
一、1.B　2.A　3.B　4.D　5.B
6．D　点拨：本题运用词语辨析法。give up放弃；keep off不接近；call off取消；wait for等待。由语境“我错过了早班公共汽车”可知，只能等待下一班车。故选D。
7．C　8.D
9．C　点拨：本题运用语法判定法。定语从句的先行词the man指人，且在从句中作主语，应用关系代词who/that。故选C。
10．A
二、11.pour　12.conclusion　13.called　14.possibly
15．raincoats
三、16.scientific knowledge　17.turned; upside down
18．take; off 　19.discovered/found; pressure
20．Are; ready; correct

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