21-25 DBDBC 26-30 BBDCC 31-35 ACBDA

36—40 ADDBC 41—45 BBDBC 46—50 BDBCC 51—55 BDDCB 

56—60 CDABC   61—65 DCCDD 66—70 ABACC 

阅读表达 ：

1 sleep problems of young people . /How to deal with young people’s sleep problems.

reason .

2 Lack of sleep can affect learning and memory.

3 Avoid drinking alcohol. /Don’t drink alcohol.

4 “Do something relaxing before going to bed”. I would rather prefer this, because relaxing yourself before bedtime will release your anxiety or depression during the day, and will improve your sleeping quality.