5、甲烷中混有乙烯,欲除去乙烯得到纯净的甲烷,最好依次通过盛有下列哪组试剂的洗气瓶
A.酸性高锰酸钾溶液、浓H2SO4 B.浓H2SO4、酸性高锰酸钾溶液
C.澄清石灰水、浓H2SO4 D.溴水、浓H2SO4
4、下面的原子或原子团不属于官能团的是
3、等质量下列烃完全燃烧消耗氧气最多的是 A.CH4 B.C2H6 C.C3H6 D.C6H6
2、某人坐在空调车内跟在一辆卡车后面,观察到这辆卡车在起动、刹车时排出黑烟,由此可推断这辆卡车所用的燃料很可能是]
A.酒精 B.汽油 C、柴油 D.液化石油气
1、通常用来衡量一个国家的石油化学工业发展水平的标志是
A.石油的年产量 B.乙烯的年产量 C.合成纤维的年产量 D.硫酸的年产量
I. 短文填词(共10题;每小题1分,满分10分)
After supper Li Hua came and asked me go 76.
and see a film with him. In our way to 77.
the cinema we saw the little girl sitting by 78.
the roadside cry. We bought her a cake to 79.
stop her crying. But when we asked where she 80.
had lived , she said she did not know . So 81.
when we took her to the police station and 82.
asked the police to take care for her . After 83.
this we went to the cinema, But when we 84.
got there the movie was near at its end. 85.
Though we missed the movie , we did a good deed.
We felt very happy.
II. 作文。(共25分)
你班最近就“中学生课余时间上网的利弊”召开一次主题班会,同学们各抒己见,畅所欲言。作为班长,请你根据下列信息,作总结性发言。
大多数同学 |
少数同学 |
1.时间是自己的,提倡多上网。 |
1.上网可以,但必须限时 |
2.网络使我们交流方便,获得国内外新知识及最新信息。 |
2.多数人上网是玩游戏而不是学习。 |
3.因特网丰富了学生的业余生活。 |
3.个别同学为了上网甚至逃学多天。 |
注意: 1.发言的开头和结尾已给出。 2.词数:100左右。
Attention, please, I’m going to give you a summary of today’s discussion
about whether we should go online in our spare time.
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