汽车行驶产生的尾气中对大气造成危害最大的成份是（）。 A.二氧_爱下问搜题

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问题单项选择题

汽车行驶产生的尾气中对大气造成危害最大的成份是（）。

A.二氧化碳

B.一氧化碳

C.二氧化硫

答案

参考答案：C

单项选择题

不属于涂料中应用的主要元素有机聚合物涂料的是：（）

A、有机硅高聚物

B、有机氟高聚物

C、有机钛高聚物

D、有机磷高聚物

完形填空

完形填空（共20小题；每小题1.5分, 满分30分）
It was a rainy day and I was riding on a bus downtown to go to work. I was_36_next to a man in a business suit and J paid little attention_37_ we both got off at the same stop and walked to the same news-stand to get a morning_38_.
The man running the stand was obviously having a_39_day. He was rude and unsmiling as we bought our papers，which only_40_ more gloom (郁闷) to my day. The businessman_41_my gloomy feeling and smiled brightly，_42_the news-stand owner for the paper and for being open on such a( n) _43_to make sure we were able to get our papers.
As we_44_away，I asked this man why he was so_45_to the newsman when he didn't _46_his expression of thanks and friendliness

. The businessman smiled at me and said,"Why would I let someone else _47_what I say and what I feel?"
We then_48_to go to our own work places. To this day，I still don't know who that businessman was，or_49_he worked. He appeared briefly in my life and disappeared just as_50_. But I've never forgotten the words he said and his_51_which seemed like a ray of light on a gloomy day.
That was a good 25 years_52_，but the effect this had on my life has lasted. I_53_had a chance to thank him personally，but the way I look at life has changed _54_those words. I have learnt that we cannot control people and_55_that come to us， but we can always control our response to them.

C．get used to

A．in search of

B．in memoryof

C．for the purpose of

D．as a result of

C．possibilities