专升本英语（完型填空）模拟试卷4
完型填空
What is in the drug that makes you sick or dead?【C1】______, cocaine is harmful, but what makes it harmful?
I can\’t tell you about drugs, but I can help you think about them in this simple way. Your body is a very【C2】______machine, really a lot of chemical machinery, all of which【C3】______so that it all works together. Special【C4】______, which we call drugs, can affect it or【C5】______it in many different ways.
Some drugs are【C6】______when your body has a problem,【C7】______disease-causing bacteria. Then someone may give you aspirin to keep your temperature from going too【C8】______or some penicillin because it stops the growth of some kinds of bacteria.【C9】______, all drugs are really poison,【C10】______if you take too much, so you must always use them carefully.
Why do some people take drugs like cocaine? For a little while they seem to make you feel【C11】______, or smarter, or happier. But after their effects have worn【C12】______, your body has to pay an extra【C13】______to get back to【C14】______That makes you want to get some more of the drug. So we say they are addictive.
Drugs like cocaine have their special effects【C15】______they act as special poisons for your nervous system. They disconnect some of your nerve pathways and take【C16】______some of your senses and your worries. They make you want always more. And just a little【C17】______much can even block nerves to your heart and stop its beating.
Many of us worry about the environment around us and what pollution does to【C18】______. How about your internal environment, and what【C19】______inside you? You control that all by yourself in what you put into your【C20】______. Most drugs are pollutants. You would not want pollutants in the air and water around you. Why would you want pollutants in your body?
1.【C1】(B)
A. In comparison
B. For instance
C. At any rate
D. To begin with
解析：
2.【C2】(C)
A. simple
B. advanced
C. complicated
D. backward
解析：
3.【C3】(A)
A. is delicately tuned
B. is delicately tuning
C. are delicately tuned
D. are delicately tuning
解析：
4.【C4】(D)
A. chemistry
B. chemists
C. chemical
D. chemicals
解析：
5.【C5】(C)
A. upturn
B. infect
C. upset
D. annoy
解析：
6.【C6】(B)
A. powerful
B. helpful
C. painful
D. faithful
解析：
7.【C7】(A)
A. as with
B. along with
C. together with
D. even with
解析：
8.【C8】(A)
A. high
B. tall
C. many
D. much
解析：
9.【C9】(C)
A. Furthermore
B. Therefore
C. However
D. Besides
解析：
10.【C10】(A)
A. at least
B. at most
C. at worst
D. at best
解析：
11.【C11】(B)
A. warmer
B. better
C. kinder
D. higher
解析：
12.【C12】(D)
A. down
B. out
C. up
D. off
解析：
13.【C13】(D)
A. sum
B. quantity
C. amount
D. price
解析：
14.【C14】(A)
A. normal
B. average
C. common
D. regular
解析：
15.【C15】(B)
A. although
B. because
C. unless
D. except that
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