The question raised in Para. 1 is no mere academic one because______. Which of the following is TRUE?

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问题 The question raised in Para. 1 is no mere academic one because______.
Which of the following is TRUE?

选项 A、Machines can help solve the problem of working at night.
B、A person can work more efficiently by frequent changes between day shifts and night shifts.
C、The adaptation to night work can be destroyed if the persons return to normal habits.
D、Permanent night workers are more likely to have such symptoms as digestive disorder.

答案C

解析 A项内容文中未提及,由第二段内容可知B项不正确,由末段末句可知D项错误,由第三段末句…return to their normal habits…destroy any adaptation to night work built up during the week可知C项正确。
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