《Lesson 25: Let's Do an Experiment!》同步练习
一、词汇运用
(A)根据句意及汉语提示写出单词
1.Do you know the     (正确的) way to shut the machine down? 
2.Miss Guo tells us that there're different    (方法) to improve our memory.
3.The Red Army were     (迫使) to have the Long March. 
(B)用所给单词的适当形式填空
4.The factory shouldn't     (pour)waste water into the river. 
5.Li Lei read the story of Yu Gong and     (conclude) that nothing is impossible if you put your heart into it. 
二、单项选择
1.—I think the show is too boring.
—    . Go on watching, and you'll find it interesting. 
A. I'm afraid so        B. I'm not sure
C. That's for sure        D. I don't think so
2.This is the first birthday gift     I received. I've kept it many years. 
A. which  　    B. that
C. who            D. what
3.—I'll be away for a long time.
—Don't worry. She can look after your pet    . 
A. careful enough        B. enough careful
C. carefully enough        D. enough carefully
4.—What will you remember most after leaving junior high school?
—I will always remember     . 
A. how my friends and teachers used to help me
B. when did my friends and teachers arrive
C. where could my friends and teachers meet
D. what did the teachers say to me
5.Excuse me, could you please    your suit? It's hot here. 
A. take off        B. take down
C. take over    D. take up
三、根据汉语意思完成句子(每空一词)
1.嫦娥5号给容器装满了月球的石块和尘土。
Chang'e 5  　 the container   　rocks and dirt from the moon. 
2.拿把雨伞吧,否则你会淋湿的。
Take an umbrella, or you will         . 
3.放学后,学生们有说有笑地从学校里涌出。
Students         of the school after school, talking and laughing. 
4.丹丹把书从桌子上拿走,个安静的地方去看了。
Dandan    the book     the desk and found a quiet place to read it. 
5.你不能把房间翻得乱七八糟。
You can't    the room        . 
四、用方框中所给单词或短语的适当形式填空(每词或短语限用一次)
put on, be sure, discover, pressure, be ready
report是什么意思1.    to give your family my regards. 
2.All the students    for today's test. 
3.While feeling    , many students don't want to sleep or eat anything. 
4.Scientists around the world are working to     a cure for AIDS. 
5.You'd better    your coat. It's very cold outside. 
五、连词成句
1.take, with, you, a, you, raincoat, should
　                                              .
2.method, can, find, I, sure, he, a, am
　                                              .
3.ready, you, the speech, for, are
　                                              ?
4.the, the, let's, lab, experiment, in, do
　                                              .
5.students, to, our, large, enough, is, classroom, hold, sixty
　                                              .
六、根据短文内容,在空白处填入一个适当的单词或括号内单词的正确形式
Do you like science? Many young kids 1.  　      　(love) it. They do many 2.    (experiment) to prove something. And 3.    course they can get many theories through the experiments. Some of 4.    (they) are dangerous, so you must use 5.    (science) methods. And you'd better 6.    (ask) your teachers for some advice. Do every step 7.    (careful), and maybe you will find something important. No matter what you'll find, that's 8.    good way to learn about the world. Thomas Edison 9.    (have) a famous saying: Genius is ninety-nine percent perspiration(汗水) 10.    one percent inspiration(灵感).
七、阅读理解
Lab work is fun but you must be careful. Listen carefully when your teacher reads and explains the rules before your first lab lesson.
LAB RULES
Throughout the Lesson
*Do not enter the science lab without the teacher's permission(允许).
*No food or drinks are allowed in the science lab.
Before the Experiment
*Read all instructions(说明) carefully before every experiment.
*Prepare all pieces of apparatus(仪器)and put them in right places so that you will not knock them over while doing the experiment.
During the Experiment
*If you are unsure of how to use any apparatus or how to operate, ask your teacher for help.
*Never smell or taste chemicals unless your teacher gives permission.
After the Experiment
*Wash all pieces of apparatus after using and returning them to the places where they were.
*Throw waste materials into proper waste baskets.
First Aid
*Report all accidents to your teacher immediately.
* If you spill any chemicals onto your body or clothing, wash with plenty of water and report it to your teacher.
1.You must know the LAB RULES    the first lab lesson. 
A. before              B. since   
C. during            D. after
2.It is necessary for you to    before every experiment. 
A. read all instructions carefully
B. take enough food and drinks
C. smell chemicals immediately
D. talk with your classmates
3.If you are not sure of how to use any pieces of apparatus,     . 
A. read the rules carefully
B. try them again and again
C. ask your teacher for help
D. return all pieces of apparatus to the places where they were
4.What does the underlined word "spill" mean in Chinese?
A. 照射            B. 伤害   
C. 摔下            D. 洒出
5.When you are in the science lab, you mustn't    . 
A. be careful in order to prevent injury
B. listen carefully when your teacher explains the rules
C. taste chemicals without the teacher's permission
D. throw waste materials into proper waste baskets
参考答案
一、词汇运用
1.correct/right　句意:你知道关掉这台机器的正确方法吗?

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