问题 选择题
如图所示,矩形线圈有N匝,长为a,宽为b,每匝线圈电阻为R,从磁感应强度为B的匀强磁场中以速度v匀速拉出来,那么,产生的感应电动势和流经线圈中的感应电流的大小应为(  )

A.E=Bav,

B.E=NBav,

C.E=Bav,

D.E=NBav,

答案

答案:D

阅读理解

Wonder why you can get angry so easily while your friend smiles all the time? It’s probably because you both have different personalities(个性).

Personality is also about how people think, behave, and react (反应) to everything around them from day to day.

So what makes people think and behave in certain ways?

Part of the reason is that people are born like this. A baby gets its blood type, genes (基因) and other physical things when it’s still inside its mother. These things may help decide what the baby will be like.

But one’s personality doesn’t stop here. Family life, school learning and life experiences can also make you the person you are. This doesn’t mean it’s impossible to change your personality. You can always try to make yourself better. Don’t get too worried about your shortcomings (缺点). Just accept them. This is a good way to start making changes.

If you don’t know how to make friends, find out why. Is it because you’re too shy? Tell yourself to smile at people. Start talking to people using warm greetings.

Don’t give yourself a hard time about it all. It’s not easy to change lifelong habits in one night. Keep working at it. One day you’ll see that you can turn over a new leaf and be a new you!

小题1:Personality is about the following except        .

A.how you behave

B.what you look like

C.how you react to something

D.how you think about something小题2:We know that         from the passage.

A.people are born the way they’ll always be

B.a person can try to change his/her personality

C.personality decides what a person looks like

D.blood type decides what a person will be like小题3:From the last two paragraphs, we learn that         .

A.a shy person can’t make many friends

B.you can work hard to improve yourself

C.everyone can change him- or herself in life

D.there is no way to change your lifelong habits

单项选择题