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问题 选择题

一个数四舍五入求近似值为3万，这个数最大是（　　）

A．29999

B．34999

C．30000

D．39999

答案

一个数的近似数是3万，这个数最小是25000，最大是34999．

故选：B．

单项选择题

甲公司于2012年2月10日签发一张汇票给乙公司，付款日期为同年3月20日。乙公司将该汇票提示承兑后背书转让给丙公司，丙公司又将该汇票背书转让给丁公司。丁公司于同年3月23日向承兑人请求付款时遭到拒绝。根据票据法律制度的规定，丁公司向甲公司行使追索权的期限是（）。

A.自2012年2月10日至2014年2月10日

B.自2012年3月20日至2014年3月20日

C.自2012年3月23日至2012年9月23日

D.自2012年3月23日至2012年6月23日
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单项选择题

Shortly after the Persian Gulf War, investigators reported that the area, which had been subjected to hundreds of smoky oil fires and deliberate oil spills when regular oil production slowed down during the war displayed less oil contamination than they had witnessed in prewar surveys of the same area. They also reported that the levels of polycyclic aromatic hydrocarbons (PAHs)—used as a marker of combustion products spewed from oil wells ignited during the war—were also relatively low, comparable to those recorded in the temperate oil-producing areas of the Baltic Sea.
Which one of the following, if true, does most to resolve the apparent discrepancy in the information above

A．Oil contaminants have greater environmental effects in temperate regions than in desert regions.

B．Oil contamination and PAH pollution dissipate more rapidly in temperate regions than in desert regions.

C．Oil contamination and PAH pollution dissipate more rapidly in desert regions than in temperate regions.

D．Peacetime oil production and transport in the Persian Gulf result in high levels of PAHs and massive oil dumping.

E．(E) The Persian Gulf War ended before the oil fires and spills caused as much damage as originally expected.
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