Which of the following statements does the speaker support?

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问题 Which of the following statements does the speaker support?
  
A large study in JAMA Pediatrics reported an 87% increased risk of autism among children born to women taking antidepressants. But 87% higher than what? About 1% of babies worldwide are born with autism. And while an 87% increase in relative risk sounds like a lot, it represents a tiny absolute increase in risk. The study also couldn’t establish for sure whether the drugs were responsible for the autism link.
When tariffs were removed on television sets, the U. S. television industry was destroyed by cheap imports. Doesn’t it follow that removing tariffs on all commodities would destroy all U. S. industry? The argument is totally wrong. Some inefficient industries would be possibly forced into bankruptcy. However, other U. S. industries not only survive but also thrive when tariffs are removed mutually by the United States and its trading partners. Expanding production in efficient industries and getting rid of inefficient industries adds to economic efficiency.

选项 A、Because it promotes economic efficiency.
B、Because it destroys inefficient industries.
C、Because it forces trading partners into bankruptcy.
D、Because it helps efficient industries survive.

答案A

解析 讲话者认为免除关税可以帮助经济效率高的企业繁荣起来,让经济效率低的企业破产,这样可以增强经济效率。B、D两项都正确,但都只是其中的一个方面,A选项可以概括这两个因素。
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