问题 选择题

下列说法不正确的是(  )

A.云、烟、雾等均能产生丁达尔现象

B.开发氢能、太阳能、风能、生物质能等新型能源是践行低碳生活的有效途径

C.用脱硫处理的煤代替原煤做燃料可以有效减少空气中CO2气体的含量

D.“光化学烟雾”、“硝酸型酸雨”的形成都与氮氧化合物有关

答案

A、云、烟、雾等属于胶体,具有丁达尔现象,故A正确;

B、开发氢能、太阳能、风能、生物质能等可以代替火力发电,减少二氧化碳的排放,故B正确;

C、煤中含有硫元素,用脱硫处理的煤代替原煤做燃料可以有效减少空气中SO2气体的含量,故C错误;

D、氮氧化物排放到空气中易形成“光化学烟雾”、“硝酸型酸雨”等环境污染,故D正确.

故选C.

单项选择题
完形填空

One cold night, I was growing sick of my life in San Francisco.There I was walking home around one o’clock in the morning after a  1 practice at the theatre. With the opening night only a week away, I was still learning my lines by heart. I was having   2 handling my part-time job at the bank in the daytime and my acting at night at the same time. As I walked, I thought seriously about  3 both acting and San Francisco. I had  4 too much of city life.

As I walked down the  5 streets under the tall buildings, I felt very small and cold, so I began  6 both to keep warm and to keep away from any possible robbers. Very few people were still out except a few homeless people under blankets.

About a block from my  7 , I heard a sound behind me. I   8  quickly, half expecting to see someone with a knife or a gun. The street was empty. All I saw was a shining streetlight. Still, the noise had made me  9 ,so I started to run faster. Not until I reached my apartment building and unlocked the door did I   10 what the noise had been. It had been my wallet  11 to the sidewalk.

Suddenly I wasn’t cold or tired anymore. I ran out of the door and back to where I’d heard the noise. Although I searched the sidewalk   12 for 15 minutes, my wallet was nowhere to be found.

Just as I was about to quit the  13 , I heard the garbage truck stop to the sidewalk next to me. When a voice came from the inside, “Alisa Camacho?” I thought I was dreaming. How could this man know my name? The door opened and out jumped a small blonde man with an  14 look in his eyes. “Is this what you’re looking for?” He asked, holding up a wallet.

It was already 3 a.m. by the time I got into bed. I couldn’t get much sleep, but I had got my wallet back. I also had got back some  15 of city life. I realized the city couldn’t be a bad place as long as people were willing to help each other.

1.A.comfortable   B.serious  C.tiresome D.fortunate

2.A.comfort   B.desire   C.pain D.trouble

3.A.setting up    B.giving up    C.holding up   D.picking up

4.A.expected  B.changed  C.controlled   D.possessed

5.A.deserted  B.crowded  C.busy D.wild

6.A.running   B.jumping  C.moving   D.marching

7.A.bank  B.theatre  C.apartment    D.office

8.A.stood B.walked   C.turned   D.left

9.A.satisfied B.confused C.frightened   D.annoyed

10. A.turn out B.figure out   C.give out D.pull out

11. A.belonging    B.adding   C.sticking D.falling

12. A.aimlessly    B.anxiously    C.skillfully   D.delightedly

13. A.discovery    B.research C.hunt D.finding

14. A.amused   B.unpleasant   C.uneasy   D.embarrassed

15. A.production   B.judgment C.friendship   D.appreciation