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问题 选择题

下列调查适合普查的是                                  【     】

A．调查2009年6月份市场上某品牌饮料的质量

B．了解中央电视台直播北京奥运会开幕式的全国收视率情况

C．环保部门调查5月份黄河某段水域的水质量情况

D．了解全班同学本周末参加社区活动的时间

答案

答案：D

解：A、调查2009年6月份市场上某品牌饮料的质量具有破坏性，适合用抽样调查，故此选项错误；

B、了解中央电视台直播北京奥运会开幕式的全国收视率情况，范围比较大，普查的意义或价值不大，应选择抽样调查，故此选项错误；

C、环保部门调查5月份黄河某段水域的水质量情况，适合抽样调查，故此选项错误；

D、了解全班同学本周末参加社区活动的时间适合普查，故此选项正确；

故选D．

单项选择题

转录所需的原料与形成的产物分别是（）

A.四种游离脱氧核苷酸、mRNA

B.四种游离核糖核苷酸、mRNA

C.四种游离核糖核苷酸、tRNA

D.八种游离核苷酸、DNA或RNA
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单项选择题

A variety of illegal acts committed by people in the course of their employment, for their own personal gain, are collectively known as white-collar crime. Embezzlement, theft and trading securities (1) insider information are common forms of white-collar crime. The majority of cases involve low-level employees who steal because they are under (2) financial stress. Many plan to (3) the money back as soon as possible but may never do so. Their crimes are usually never (4) because the amounts of money are small, and no one notices the (5) .

(6) , there are some very large cases of white-collar crime, such as multimillion-dollar stock market or banking seams that take years to discover and are extremely difficult and expensive to (7) .

White-collar crime is not (8) to the business sector. Government employment, especially (9) the city level, also provides opportunities to (10) one’s pockets. (11) , building inspectors accept bribes and full-time employees receive (12) payments.

Although white-collar crime is less (13) than street crime, it involves (14) more money and harm to the public than crimes committed by street criminals. It is (15) that there are more criminals (16) the office suites than in the streets, yet the (17) of white-collar makes it difficult to uncover the offenses and pursue the offenders. As the economy (18) from manufacturing to services and electronic commerce, opportunities for white-collar crime (19) , while the technology needed to stop such crimes will (20) .

18（）

A.ranges

B.shifts

C.transfers

D.transforms
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