题目

图所示的电路中，电源电压恒定．闭合开关S后，电路正常工作．过了一会儿，两电表的示数突然都变为零，则该电路中出现 的故障可能是:A. 电阻R断路;    B．电阻R短路;    C．灯L断路;      D．灯L短路. 答案：C “I don't like my parents. They always tell me I should do this, and should not do that. It sometimes makes me angry,” said Zhang Hua，a middle school student in Guangzhou. Do you have the same problem? Perhaps your parents had the same problem when they were your age long ago. Why does it seem that some parents are not so friendly in their children's eyes?One of the biggest things is when someone becomes a parent, he/she likes worrying about things. They worry about everything about you, from the time you were born (出生). They do a lot for you, though something would make you angry, because they care about you and worry about you. They worry about your choice (选择) of friends, the food you eat, your work at school, how much sleep you get, etc. All these things are part of your life. They want you to grow up healthily and happily.So how can you make things easier on yourself? It's easier than you think. Just make sure your parents know what you're doing. Get them to know your friends. Phone if you stay somewhere else so that your parents don't call everybody in the phone book looking for you. Say sorry to them when you make mistakes. Take responsibility (负责任) for what you did. Talk about your ideas with them. They may talk about theirs with you.Most of all, try to think about why your parents do this or do that. They are still practicing being parents and need help from you. Someday, when you become a parent, they may be able to help you how to get on with your children.1.Parents sometimes look so unfriendly because ______.A. they are older than usB. they worry about almost everything about usC. they have the same problems as usD. they are often unhappy2.Parents worry about ______.A. who you make friends with B. what you eatC. your schoolwork D. all the above3.The writer thinks we should ______ if we go back home later than usual.A. tell our friendsB. tell the teacherC. say sorry to our parentsD. make a telephone call to our parents4.The writer thinks ______.A. it's wrong of parents to worry about their children too muchB. some parents are unfriendly, and this makes their children angryC. parents love their children very much and the children should understand themD. children should do everything as their parents say【小题】Which is the best title (题目) for the passage?A. How to Get on with (相处) Parents?B. Parents' ResponsibilityC. Zhang Hua's ProblemD. What Are Parents Worrying about?