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问题 选择题

患急性肺炎的患者血液中往往会出现（　　）

A．白细胞增多

B．红细胞增多

C．血小板减少

D．血红蛋白增多

答案

血液包括血细胞和血浆，血细胞包括红细胞、白细胞和血小板，血浆的主要作用是运载血细胞，运输人体所需的物质和体内产生的废物等，白细胞具有保护和防御，吞噬病菌的作用，当病原体侵入人体后，白细胞就穿过毛细血管壁，

集中到病菌的入侵部位，将病毒吞噬，所以有炎症患者的血液中，白细胞的数量增加．

故选：A

问答题

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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) .

19（）

A.degenerate

B.upgrade

C.decrease

D.multiply
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