.
A. won’t cause serious brain damage
B. can permanently destroy one’s brain cells
C. can’t show any effect in an experiment
D. may bring on Parkinson’s at once
54. Why are squirrel monkeys and baboons involved in the experiments?
A. Because their brain is similar to human being’s
B. Because these animals usually take drugs.
C. Because these animals will soon get well after the experiment.
D. Because there is a model in the animals’ brains.
55. The underlined word "This" in the last paragraph means “
”.
A. Leah died after a single Ecstasy tablet in 1995.
B. people have long known that repeated use of the drug damages brain cells
C. occasional use of the drug can have long-lasting effects on one’s brain systems
D. taking drug has the same symptoms as smoking
参考答案
完形填空
21—25 DCABB
26—30 CADCC
【解读】本文作者想要告诉我们,在生活中,我们不要只看到生活的阴暗面,要看到生活的积极的一面,要有一个积极的生活态度,创造一个积极的生活。
【解析】
1. D。考查语境的理解。从下文的描述知道,这里是说问题。Problem是强调生活中的问题,不时可以简单解决的;question“问题,疑问”,常指学习工作的问题,可以马上解决的。
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