三联保障体系是促进青少年健康心理发展的最有效手段，具体指（）。 A.社会－学校－父母

阅读理解。

     American boys and girls love to watch TV. Some children spend six hours a day in front of the TV set.

Some children even watch TV for eight hours or more on Saturday. Many parents let their children watch TV

only during certain (特定) hours.

     TV shows are like books or films. A child can learn bad things from some of them and good things from

others. Some shows help children to understand the news from the world. Some programs (节目) show people and places from other countries or other times in history. With TV a child does not have to go to the zoo to see

animals or to the sea to see a ship (轮船). Boys and girls can see a play or a basketball game at home. Some

programs even teach children how to cook or how to use tools (工具).

     It is fun to watch TV, but it's also fun to play games, to read a book or to visit friends.

1. American boys and girls spend _____.

A. six hours at school on Saturday

B. four or six hours on TV shows on Saturday

C. eight hours or more watching TV every day

D. very long time in front of the TV sets at the weekend

2. Many parents _____.

A. let their children learn things from TV but not going to schools

B. ask their children to watch TV during the certain time

C. think that TV programs are better than (好于…) the textbooks

D. let their children to watch what they like

3. With TV, boys and girls can _____.

A. learn good things and bad things

B. only learn interesting news and places

C. learn from each other (相互) and play basketball games at home

D. read books at home and see movies in the cinema

4. Boys and girls like to watch TV because _____.

A. they do nothing at home

B. their parents like TV programs

C. they don't want to play games or visit friends

D. it is fun

5. The writer's opinion is _____.

A. boys and girls should spend some time both on TV and other things

B. children shouldn't watch TV shows

C. parents can't buy TV sets

D. children should stop watching TV

有了正确的路线、方针、政策以后，必须认真地以贯彻执行、使之变成亿万人民群众的实际行动而要做到这一点，关键是：（）。

A.把路线、方针、政策的本身与在执行中出现的错误和价差区别开来；

B.把大政方针的正确与具体做法的失误，和具体工作中的缺点，错误区别开；

C.要做好宣传和教育工作

根据《中华人民共和国防汛条例》第十八条规定，山洪、泥石流易发地区，当地有关部门应当做好哪一方面工作？在雨季到来之前，如发现险情征兆明显的地区，应当如何采取措施？

果蔬中的氨基酸与成品的色泽有关，如与还原糖发生（）使制品褐变，酪氨酸在酪氨酸酶作用下氧化产生（）而使制品变色。