题目内容
3.请听第10段材料,回答第17至20题.17.What is the best amount of sleep for most adults according to the talk?
A.Nearly 7 hours.
B.7 to 8 hours.
C.About 9 hours.
18.How much exercise per day does the speaker suggest for good sleep?
A.20 to 30 minutes.
B.30 to 40 minutes.
C.40 to 50 minutes.
19.How many"don't s'are mentioned in the talk?
A.5.
B.4.
C.3.
20.What is the speaker's view on sleeping and getting up at regular times?
A.It's normal.
B.It's vital.
C.It's unnecessary.
分析 略
解答 BACB
点评 略
练习册系列答案
相关题目