题目内容
（请给出正确答案）
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.
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更多“What does paragraph 3 mainly d…”相关的问题
What does the word "sheep" in the last paragraph mean？
A．Idiot.
B．Believer.
C．Dreamer.
D．Adventurer.
What does the underlined word "exponentially" mean in the last paragraph？
A．Promisingly.
B．Continuously.
C．Drastically.
D．Rapidly.
What does the underlined word“dumbfounded”(in Paragraph 2) probably mean？
A．Surprised.
B．Happy.
C．Excited.
What does the word "must" mean in the last paragraph？
A．Need.
B．Needy.
C．Necessary.
D．Have to.
What does "balk" mean in the third paragraph？
A．accept
B．refuse to comply
C．suspect
D．challenge
What does the underlined word "stifling " (Paragraph 1 ) probably mean？
A．Disappearing gradually.
B．Giving out into the air.
C．Hot and breathless.
D．Pleasing and comfortable.
What does the word" shaky" mean in the last paragraph？
A．Trembling.
B．Undependable.
C．Inaccurate.
D．Unsteady.
What does the paragraph following the passage probably discuss？
A．Industry on Lake Erie
B．Canals in Ohio and Indiana
C．Sectional jealousies in Indiana and Ohio
D．Travel on the Erie Canal
What does the word "invitro" underlined in Paragraph 2 most probably mean？
A．Normal.
B．Test-tube.
C．Built-in.
D．Formal.
