阅读理解。
"It hurts me more than you." and "This is for your own good." These are the statements my mother used
to make years ago when I had to learn Latin, clean my room, stay home and do homework.
That was before we entered the permissive period in education in which we decided it was all right not to
push our children to achieve their best in school.
The schools and the educators made it easy for us. They thought that it was right to be parents who take
a let alone policy. We stopped making our children do homework. We gave them calculators (计算器), turned
on the television, left the teaching to the teachers and went on vacation.
Now teachers, having taught many children who have been developing at their own step for the past 15
years, are realizing we've made a terrible mistake. Sharon Klompus is such a teacher who thinks her students
"so passive" and wonders what happened. Nothing was demanded of them. She believes that Television
contributes to children's passivity. "We're not training kids to work anymore," says Klompus. "We're talking
about a generation of kids who've never been hurt or hungry. They have learned somebody will always do it
for them. Instead of saying' go and look it up', you tell them the answer. It takes greater energy to say no to
a kid."
Yes, it does. It takes energy and it takes work. It's time for parents to end their vecation and come back
to work. It's time to take the car away, to turn the TV off, to tell them it hurts you more than them but it's
for their own good. It's time to start telling them no again.
1. Children are becoming more inactive in study because _____. [ ]
A. they watch TV too often
B. they have done too much homework
C. they have to fulfill too many duties
D. teachers are too strict with them
2. To such children as described in the passage _____. [ ]
A. it is easier to say no than to say yes
B. neither is easy to say yes or to say no
C. it is easier to say yes than to say no
D. neither is difficult to say yes or to say no
3. We learn from the passage that the author's mother used to play emphasis on _____. [ ]
A. learning Latin
B. natural development
C. discipline
D. education at school
4. By "permissive period in education" the author means a time _____. [ ]
A. when children are allowed to do what they wish to
B. when everything can be taught at school
C. when every child can be educated
D. when children are permitted to receive education
5. The main idea of the passage is that _____. [ ]
A. parents should leave their children alone
B. kids should have more activities at school
C. it's time to be more strict with our kids
D. parents should always set a good example to their kids
以及
围成的平面图形，设x=rcosθ，y=rsinθ，则可把直角坐标系中的二重积分
化为极坐标系(r，θ)中的累次积分______．