题目内容:
What does Paragraph 3 mainly discuss?
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.
参考答案:
答案解析: