题目内容：

A new survey of 100 hard-working mothers shows that they spend about 70 hours a week doing chores and looking after their families.

They spend more than ten hours a day cooking, cleaning the house, getting children ready for school and helping with homework. Cooking takes up (占用) about one hour and nine minutes a day. Doing the laundry takes about 61 minutes. Mothers also spend about 55 minutes getting children ready for school, about 53 minutes putting them to bed and about 47 minutes helping with homework.

However, 30% of those mothers with children under 16 get less than six hours’ sleep at night. 83% are not happy because they have less than an hour of their own(自己的) time every day. Only 17% are happy with this kind of life.

1.In the survey, mothers spend about 70 hours a week __________.

A. going shopping                           B. doing chores

C. looking after their families                 D. Both B and C

2.It takes mothers _________ to cook every day.

A. about 69 minutes                     B. about 55 minutes    

C. about 47 minutes                     D. about 10 hours

3.In the survey, ________ mothers with children under 16 sleep less than six hours at night.

A. 100              B. 70               C. 83           D. 30

4.From the survey, we know that _________________.

A. no mothers like this kind of life

B. a few mothers are hard-working

C. most mothers want to have more time to do their own things

D. all mothers would like to work harder