31.Sleepiness is harmful because ___________.

A.Our scores at school may be low and the relationship with other becomes worse.

B.Important body functions and brain activity occur during sleep

C.You can look bad behind the wheel

D.Can lead to appropriate behaviors or being patient with your teachers or family members.

32.In order to function best, teenagers need __________.

A.At least 10 hours of sleep each night

B.Over about 10 hours of sleep each night

C.About 8 to 10 hours of sleep each night

D.8 hours and a half on school nights

33.All of the following are bad sleeping habits EXCEPT ________.

A.Having coffee or tea close to bedtime

B.Staying up very late on the weekends

C.Having nicotine and alcohol

D.Having the same sleep pattern

34.A consistent sleep schedule is very important because _______.

A.It will help you feel less tired during daytime

      B.You have less difficulty in falling asleep at bedtime

C.Nicotine and alcohol will not interfere with your sleep

D.It is easier for you to fall asleep at any time.

35.The word “consistent” in the last paragraph is closest in meaning to ________.

A.Not changing

B.agreeing

C.similar

D.changeable