其他刺激物的出现，对正在进行的条件反射发生的抑制称为()抑制。
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The wire fell to the floor ______.
A. because Mrs. Clarke refused to open the door
B. hen the man's glove dropped off
C. because it was too hot to hold
D. because the man just wanted to get away
Which of the following statements is TRUE according to the passage？
A. Death is a taboo topic today.
B. It is taboo to talk about fat.
C. The topic of fat is different from many other taboo subjects.
D. Fat is a topic that Americans talk about very little.
Based on the ideas presented in the passage we can conclude that, in American society, "being fat" ______.
A. has long been a taboo
B. will always remain a taboo
C. may no longer be a taboo someday
D. is not considered a taboo by most people
The colleges and universities were in trouble because of the following masons EXCEPT that
A. they couldn't get enough income to keep them running
B. young people couldn't afford the tuition fees
C. keeping them running at the same level would cost much more
D. social services need more state funds because of the recession
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