问题 选择题

下列各组物质的化学名称、俗名、化学式三者相符的是(  )

A.氢氧化钠纯碱NaOH

B.氢氯酸盐酸HCl

C.硫酸铜胆矾CuSO4

D.乙醇酒精CH3C00H

答案

A、氢氧化钠,俗名是火碱或者烧碱或苛性钠,化学式为NaOH.纯碱为碳酸钠.错误.

B、氢氯酸是盐酸的化学名称,盐酸是俗名,其化学式为HCl.正确.

C、硫酸铜是CuSO4,而胆矾是CuSO4?5H2O.错误.

D、乙醇的俗名是酒精,化学式为C2H5OH,而非CH3COOH(乙酸).错误.

故选B.

改错题

第Ⅱ卷(非选择题,共35分)

第三部分写作(共两节,满分35分)

此题要求改正所有短文中的错误。对标有题号的每一行做出判断:如无错误,在该行右边横线上画一个勾(P);如有错误(每行只有一个错误),则按下列情况改正:

此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。

此行缺一个词:在缺词处加一个漏字符号(),在该行右边横线上写出该加的词。

此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。

注意:原行没有错的不要改。

According to a survey, quite few junior and senior students     76.______

visit Internet bars frequent. They are there mainly to play games.     77.______

Worse still,many of whom even look at some unhealthy pictures.        78.______

Some of the students sometimes stayed in the bar for a whole night.  79.______

All these have a bad effect not only on their studies but also                    80.______

on their health. And it is no doubt that Net bars do no good to          81.______

students. I think students should make the full use of time, work      82.______

hard at their lessons and try their best to gain more knowledges         83.______

in order to have a bright future. I’m sincerely called on these            84.______

students who are addicted to Net bars to keep far away from it.               85.______

单项选择题