问题 选择题

对于定量气体,可能发生的过程是(  )

A.等压压缩,温度升高

B.等温吸热,体积不变

C.等容吸热,温度升高

D.绝热压缩,内能不变

答案

A、根据气态方程

PV
T
=C可知,等压压缩过程中,体积减小,则温度降低,故A错误;

B、等温说明内能不变,即△U=0,吸收热量,即Q>0,根据热力学第一定律△U=W+Q可知W<0,即气体膨胀对外做功,所以等温吸热,体积膨胀,故B错误;

C、等容吸热,即气体不对外界做功外界也不对气体做功,W=0,吸收热量,即Q>0,根据热力学第一定律△U=W+Q可知△U>0,则温度升高,故C正确;

D、绝热说明气体不能吸放热即Q=0,压缩说明外界对气体做功,根据热力学第一定律△U=W+Q可知:绝热压缩,内能增大,故D错误.

故选:C.

阅读理解

I fell in love with England because it was quaint (古色古香的)—all those little houses, looking terribly old fashioned but nice, like doll’s house. I loved the countryside and the pubs, and I loved London. I’ve slightly changed my mind after seventeen years because I think it’s an ugly town now.

Things have changed. For everybody, England meant gentleman, fair play, and good manners. The fair play is going, unfortunately, and so are the gentlemanly attitudes and good manners—people shut doors heavily in your face and politeness is disappearing.

I regret that there are so few comfortable meeting places. You are forced to live indoors. In Paris I go out much more, to restaurants and nightclubs. To meet friends here usually has to be in a pub, and it can be difficult to go there alone as a woman. The cafes are not terribly nice.

As a woman, I feel unsafe here. I spend a bomb on taxis because I will not take public transport after 10 p.m. I used to use it, but now I’m afraid.

The idea of family seems to be more or less non-existent in England. My family is well united and that’s typically French. In Middleses I had a neighbor who is 82 now. His family only lived two miles away, but I took him to France for Christmas once because he was always alone.

小题1:The writer doesn’t like London because she___________.

A. is not used to the life there now

B. has lived there for seventeen years

C prefers to live in an old-fashioned house

D. has to be polite to everyone she meets there

小题2: Where do people usually meet their friends in England?

A.In a café

B.In a restaurant

C.In a nightclub

D.In a pub小题3:The underlined word “it” in Para.4 refers to__________.

A.a taxi

B.the money

C.a bomb

D.public transport小题4:The writer took her neighbor the France for Christmas because she__________.

A.felt lonely in England

B.had never been to France

C.was from a typical French family

D.didn’t like the British idea of family

单项选择题