题干

以下说法正确的是()

A:光的偏振现象说明光是纵波

B:根据麦克斯韦电磁场理论,变化的电场周围一定产生变化的磁场

C:狭义相对论两个基本假设之一是:在不同惯性参考系中,一切物理规律都是一样的

D:奥斯特通过实验发现了在磁场中产生电流的条件

上一题 下一题 0.0难度 选择题 更新时间:2019-03-23 06:43:46

答案(点此获取答案解析)

C

同类题2

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项,选项中有两项为多余选项。

    We've all experienced peer pressure (同伴压力). It happens to everybody. However, people have different reactions. Confident people refuse to do things they don't want to do, but shy and anxious people often give in. It may be because they want to be liked. It may be because they worry that their friends will make fun of them, or perhaps they're just curious about trying something new. ____

    It's hard being the only one who says no and the question is: how do you do it? ____ If you think that missing maths, or smoking, or going somewhere you know your parents wouldn't like is a bad idea then the answer is simple: don't do it. It's your decision, nobody else's. You don't need to be aggressive. You don't need to shout and scream, but you must be confident and you must be firm. You need to say, “No thanks. I don't want to do that.”

    Being on your own against everybody else is very hard, so it can really help to have at least one other peer, or friend, who will say no too. ____ You want friends who will support you when you're in trouble. You don't want people who will always agree with the majority. Remember, the most popular people aren't always the most trustworthy.

____ — You can learn a lot from people your own age. They can teach you great football skills or the best way to do your maths homework. They can recommend music and advise you on fashion. And don't forget you can tell them things too, and that always feels great. So, find friends who have similar interests. And remember, friendship isn't about feeling depressed and guilty. ____

A. Choose your friends carefully.

B. Firstly, you must decide what you believe in.

C. It's about sharing experiences and having fun.

D. Of course, peer pressure isn't completely bad.

E. It may be because they were all born to be stubborn.

F. Depression and guilt will surely give you peer pressure.

G. Whatever the reason, some people end up doing things they really don't want to.