题目

植物生长需要最多的无机盐是( ) A . 水中的有机物 B . 含氮、铁、磷的无机盐 C . 含氮、钾、磷的无机盐 D . 蛋白质和淀粉 答案：CIn America, boys and girls like watching TV. Some children spend six hours a day at school and four to six hours a day in front of the TV sets. Some children even watch TV for eight hours or more on Saturday.Television is like books and films. A child can learn both good things and bad things from it. Some TV programs help children to understand the news, the people and places in other countries. With TV, children do not have to go to the movies. They can listen to interesting music or watch a game at home. But some programs are bad for children, so parents sometimes should help them to find other interesting and useful things to do.1.How many hours a day do some children spend at school?2.How many hours a day do some children watch TV on Saturday?3.将划线句子译成汉语 ___________________________________________. 4.The parents had better not let their children watch on TV.5. Some TV programs help to understand the news, the people and places in other countries.