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问题 选择题

政府及其公职人员必须依据宪法和法律行使权力。政府坚持依法行政体现了[ ]

A、求真务实的工作作风

B、从群众来到群众中去的工作方法

C、对人民负责的原则

D、人大意志和政协意见的统一

答案

答案：C

单项选择题

Since life began eons ago, thousands of creatures have come and gone. Some, such as the dinosaurs, became extinct due to naturally changing ecologic conditions. More recent threats to life forms are humans and their activities. Man has drained marshes, burned prairies, dammed and diverted rivers. Some of the more recent casualties of man’’s expansion have been the dodo, great auk, passenger pigeon, Irish elk, and Steller’’s sea cow. Sadly, we can no longer attribute the increasing decline in our wild animals and plant species to "natural" processes. Many species are dying out because of exploitation, habitat alteration or destruction, pollution, or the introduction of new species of plants and animals to an area. As mandated by Congress, protecting endangered species, and restoring them to the point where their existence is no longer jeopardized, is the primary objective of the U.S. Fish and Wildlife Service’’s Endangered Species Program.

Which of the following has become extinct due to man’s destruction

A．African elephant.

B．Irish elk.

C．Giant panda.

D．White Bengal.
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单项选择题 A型题

普鲁卡因青霉素之所以能长效，是因为（）

A.改变了青霉素的化学结构

B.抑制排泄

C.减慢了吸收

D.延缓分解

E.加进了增效剂
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