A．sweepB．washC．tidyD．dust
A. sweep
B. wash
C. tidy
D. dust
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The sentence "You might tolerate the old road-hog... the rule." (Para. 1) implies that
A. our society is unjust towards well-mannered motorists
B. rude drivers can be met only occasionally
C. the well-mannered motorist cannot tolerate the road-hog
D. nowadays impolite drivers constitute the majority of motorists
The author uses the example of lobar pneumonia to show that________.
A. understanding the cause of a disease precedes curing it
B. the record of the past half century is one of medical progress
C. antibiotics let to an understanding of underlying disease mechanisms
D. many diseases are now called multifactorial
“生态学”这一学科名词最早是由德国动物学家海克尔提出的。
A. 正确
B. 错误
行为调节、内分泌调节、遗传调节和食物调节都属于种群自动调节机制。 [ ]
A. 正确
B. 错误
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