单选题 Passage Two

A、 35million.
B、 34million
C、 25million
D、 20million

【正确答案】 A

【答案解析】

A、 Author, professor and dreamer
B、 Writer, professor and insomniac.
C、 Author, psychologist and insomniac.
D、 Dramatist, psychologist and scientist.

【正确答案】 B

【答案解析】

A、 Sleeping in 8-hour consolidated blocks.
B、 Sleeping during day time.
C、 Going to bed soon after dark.
D、 Two blocks of 4-hour sleep with a waking break.

【正确答案】 C

【答案解析】

A、 Because they have unnoticeable sleeping patterns.
B、 Because they sleep very little.
C、 Because they are insensitive.
D、 Because they can't complain.

【正确答案】 D

【答案解析】

A、 Sleep is highly variable, and wears out with age.
B、 Falling asleep is a gradual process.
C、 Sleeping less will help you lose weight.
D、 People need to sleep eight hours a day.

【正确答案】 A

【答案解析】