问题
单项选择题 A1型题
支气管肺炎与支气管炎的主要鉴别点是（）
A.发热的高低
B.咳嗽的轻重
C.食欲的好坏
D.肺部是否有固定的中小水泡音
E.血白细胞数的高低
答案
参考答案：D
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支气管肺炎与支气管炎的主要鉴别点是（）
A.发热的高低
B.咳嗽的轻重
C.食欲的好坏
D.肺部是否有固定的中小水泡音
E.血白细胞数的高低
参考答案：D
| 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 Wilidlife Service’s Endangered Species Program. |
According to this passage,
A．man is the cause of some animal extinction.
B．animals often bring about their own extinction.
C．Congress can absolutely end extinction of animals.
D．a law is more important than human responsibility.