The author mentions "pick-me-up" to indicate that______. What does paragraph 3 mainly discuss?

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问题 The author mentions "pick-me-up" to indicate that______.
What does paragraph 3 mainly discuss?

选项 A、Different effects of caffeinated coffee and decal on sleep.
B、Different findings of Lotan Shilo and a team about caffeine.
C、The fact that the subjects slept 415 minutes per night after drinking decaf.
D、The evidence that the subjects took half an hour to fall asleep.

答案A

解析 该题考察判断指定段落的大意,因此关注段落中的观点句。段落第一句中就出现了明显表示其所在的句子是观点的结构:“某某专家find(发现)……”Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slent less well after a cup of caffeinated coffee than after drinking the saine amount of decaf.因此可以直接借助该句句意判断答案。该句说“Lotan Shilo和一个研究小组发现六个志愿者在喝了一杯含咖啡因的咖啡后其睡眠状况不如喝了等量的脱咖啡因的咖啡后睡眠好。”因此判断A“含咖啡因的咖啡和不含咖啡因的咖啡对睡眠带来的不同影响”是答案。
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