试题与答案

1L溶液中所含()的物质的数量就是溶液的物质的量浓度A.溶液 B.溶质 C.溶剂 D

题型:单项选择题

题目:

1L溶液中所含()的物质的数量就是溶液的物质的量浓度

A.溶液

B.溶质

C.溶剂

D.物质

答案:

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More than a century ago workers were forced to deal with harsh conditions.They were paid very little and they often worked 10-to l2-hour days.Men, women and even small children were forced to work even when they were sick.Tired of long hours and dangerous conditions,workers began organizing themselves into labor unions.On top of fighting for higher pay and shorter workdays,they also fought for the rights of children.The workers wanted employers to place limits on the age of their workers so that small children were not overworked or hurt in factories.

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小题1:What do we know from Paragraph 1?

A.Americans have more than a day off on Labor Day.

B.Many countries in the world celebrate Labor Day.

C.Labor Day has a deep meaning for American laborers.

D.Labor Day shows the social and economic power of America.小题2:The underlined word “rallied” in Paragraph 3 can be replaced by“___________”.

A.persuaded

B.supported

C.warned

D.gathered小题3:Which of the following statements is TRUE according to the passage?

A.There were about 100,000 workers in New York City in 1872.

B.Labor Day became a national holiday in 1884.

C.The idea for Labor Day was first put forward by McGuire in 1872.

D.The first ever Labor Day parade was held in 1882.小题4:According to the author,while spending Labor Day,Americans should feel ___ .

A.surprised

B.thankful

C.dissatisfied

D.terrified

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