问题 单项选择题

关于大气污染物的有组织排放,错误的是

A.排出高度是指污染物通过烟囱等排放时烟囱的有效排出高度
B.污染源下风侧的污染物最高浓度与烟波的有效排出高度的平方呈反比
C.有害气体的烟波着陆点是烟囱有效高度的10~20倍
D.与污染源的距离是决定大气污染程度的最基本因素
E.近地面的大气中污染物的浓度以烟波着陆点处最大

答案

参考答案:D

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完形填空(满分30分)

My first memories of acts of kindness are from when I was about 12 years old. I always 41 people as soon as possible with whatever they needed.

At that time, I noticed that many 42 people had difficulty going to the grocery store 43  a snowstorm. I would spend part of a 44 Saturday knocking on my elderly neighbor’s apartment doors to ask if they 45 anything from the store. The 46  was down a hill and I would bring back a couple of bags of goods for them. I liked it and it made them so  47  , too.

My friends asked me 48  I was doing and after some time some of them 49  in and it became a  50  as time went by. I 51 asked for money for what I did, but sometimes the old ladies would  52  the change in my pocket secretly. The next time I would buy some flowers or cards for them.

When I went to college, many of these people would 53  my mother about me,  54 my mother didn’t always know who they were. It was through those 55 between my mother and these people that she  56 what I used to do for them — I had never told her.

I 57 helping others when I was 12 and it  58until today. Now, I’m a teacher and teaching my students the art of true 59 . At first I wrote this for my diary, but my mother said why not 60 it with everyone. I hope this inspires younger people and the old alike.

A. helped B. gave     C. cared   D. offered

A. lazy      B. tired     C. kind      D. old

A. after    B. before C. until     D. since

A. fine     B. snowy  C. funny   D. busy

A. got       B. fetched         C. needed         D. took

A. store    B. factory          C. hospital        D. college

A. sad       B. happy  C. strange        D. young

A. whether       B. when   C. why      D. what

A. turned B. looked C. gave     D. joined

A. rule      B. habit    C. tradition       D. custom

A. never   B. usually C. always D. sometimes

A. put       B. choose          C. save     D. keep

A. think    B. ask       C. guess   D. find

A. but       B. and       C. so        D. or

A. conversations      B. discussion    C. statements D. speeches

A. knew from   B. thought over        C. learned about      D. talked about

A. finished        B. started         C. stopped        D. lasted

A. pauses          B. remains        C. continues     D. follows

A. love      B. kindness       C. friendship    D. honesty

A. show    B. divide   C. deliver D. share

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