单项选择题
古生物学与地质学发现，一些新物种出现的突然性和缺少中间过度类型的现象，达尔文对此的解释是：新种在短时间内快速形成。
A、正确
B、错误
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相关考题
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未知题型
The attitude of those who are 'barking up the wrong tree' towards the primacy of US in the 21st century seems to be ______.A.indifferent.B.optimistiC.C.indignant.D.apprehensivE.
A.A.indifferent.
B.optimistiC.
C.indignant. -
不定项选择
20世纪现实主义文学深受现代主义潮流的影响，吸纳了大量现代主义的艺术技巧和写作手法。<b
A．正确
B．错误 -
未知题型
When mentioning 'the something-for-nothing days'(Paragraph 2), the writer is talking about ______.A.Mr. Blair's unique commitment to public-service reforms.B.blank cheques given as a compromise to health workers.C.Mr. Blair's pledge to spending increases on public services.D.pay and conditions granted to health-service workers.
A.A.Mr.
B.
B.blank
C.
C.Mr.
D.
D.pay
