问题 选择题

化学与生活密切相关;下列说法不正确的是

A.PM2.5也称细颗粒物,对空气质量和能见度等有重要的影响

B.稀豆浆、硅酸、氯化铁溶液、空气均为胶体

C.聚乙烯塑料制品可用于食品的包装

D.次氯酸钠溶液可用于环境的消毒杀菌

答案

答案:B

三氯化铁溶液不是胶体,B错;

改错题

短文改错(共10小题,每小题1.5分;满分15分)

此题要求改正所给短文中的错误。对标题号的每一行做出判断:如无错误,在该行右边横线上勾(√);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。

Henry Royce did not like his car, that ran badly and often broke down.         76.___________

So he decided to make better car himself,                                                77.___________

and in 1904 he produced his first new model. Charles Rolls,                         78.___________

a car maker, was very interesting in Royce’s car, and soon                    79.___________

Rolls and Royce go into business together. One of their first                       80.___________

model was the Silver Ghost. In 1907, a Silver Ghost broke                                 81.___________

the world’s record by drive 14,371 miles without breaking                             82.___________

down once. After the drive, it was cost just over £2 to put                                     83.___________

the car back into perfect condition. This is not surprising that                          84.___________

the Silver Ghost was regarded “the best car in the world”.                              85.___________

计算题