问题 单项选择题

设有六件产品,其中两件是次品,现从中任取两件,则无次品的概率是()。

A.A

B.B

C.C

D.D

答案

参考答案:D

解析:

设B=“任取2件无次品”,则P(B) =

阅读理解
阅读理解。
     Taxes are a big part in the United States. Most Americans pay city taxes, state taxes, social security (安全)
taxes, sales taxes… and the list seems endless. The biggest tax for most Americans is the incomes tax. The
personal income tax is called a "progressive tax", because it takes more from those who earn (挣钱) most. For
example, a person who earns about $3,500 a year, will pay a tax of only about 3.5% of earning, but if the
same person earned $85,000 a year, he would pay an income tax of 35%. Over years the incomes tax has
become more and more difficult for people to understand. Almost one half of all Americans now have to pay
experts to prepare their tax reports. In fact, preparing taxes and giving tax have become a big industry (工业)
in America.
1. Most Americans pay ______.
[ ]
A. taxes which are too many to list
B. taxes either to the cities or the states they live in
C. several kinds of taxes
D. so many kinds of taxes that they even don't know the names
2. Which is the biggest tax for most Americans is ______.
[ ]
A. the state tax
B. the social security (安全) tax
C. the income tax
D. the city tax
3. Which of the following is NOT true?
[ ]
A. Americans have all kinds of taxes.
B. Personal income tax is the biggest tax in American.
C. The more a person earns, the more income tax he should pay.
D. Personal income tax can prevent the rich from getting richer.
4. The so-called "progressive tax" is the tax ______.
[ ]
A. collected for social progress
B. that increases with each passing year
C. that is collected from those who earn most
D. that varies (变化) according to how much money a person earns
5. Why have preparing and giving advice become a big industry in America?
    Because            .
[ ]
A. the list of taxes seems endless
B. they would rather spend their time and energy elsewhere
C. they find their knowledge about taxes is too limited to write a tax report by themselves
D. paying experts to prepare their tax reports and asking for tax have been very popular
g
材料题

读下列材料:

材料一:一九七八年十二月召开的十一届三中全会,是一次很不寻常的会议。大家都记得,在粉碎“ * * ”、结束持续十年的“ * * ”后,中国百业待举。广大干部和群众强烈要求纠正“ * * ”的错误理论、方针和政策,彻底扭转十年内乱造成的严重局势,使中国从危难中重新奋起。但是,这种要求和愿望遇到严重阻碍,党和国家的工作在前进中出现徘徊的局面。中国面临一个重大历史关头。

十一届三中全会,是建国以来我党历史上具有深远意义的伟大转折。党在思想、政治、组织等领域的全面拨乱反正,是从这次全会开始的。伟大的社会主义改革开放,是由这次全会揭开序幕的。     ——摘自江 * * 《在纪念党的十一届三中全会召开二十周年大会上的讲话》

材料二:2008年,对中国人民来说,是十分重要的一年。我们将隆重纪念改革开放30周年。1978年开始的改革开放,是决定当代中国命运的关键抉择,使社会主义中国的面貌发生了历史性变化。——摘自2008年胡 * * 《共同推进人类和平与发展的崇高事业》(新年贺词)

请回答:

(1)导致材料一中“这种要求和愿望遇到严重阻碍,党和国家的工作在前进中出现徘徊的局面”出现的史实是什么?材料二中“2008年,对中国人民来说,是十分重要的一年”,这一年里中国迎来的两件盛事是什么?

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(2)材料一中“党在思想、政治、组织等领域的全面拨乱反正,是从这次全会开始的。”请你列举十一届三中全会重新确立的马克思主义的思想路线、政治路线和组织路线的基本内容。

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(3)党和人民隆重纪念十一届三中全会的原因是什么?这次会议给我们哪些启示?

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