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人首鱼龙注壶

题目标签:鱼龙注壶
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【单选题】Rare FossilRecord The preservation of embryos and juvenilesis a rare occurrence in the fossil record.The tiny,delicate skeletons areusually scattered by scavengers(食腐动物) weathering beforethey can...

A.
The first paragraph describes a place while the second paragraph describes a field of study.
B.
The first paragraph defines the terms that are used in the second paragraph.
C.
The second paragraph describes a specific instance of the general topic discussed in the first paragraph.
D.
The second paragraph presents information that contrasts with the information given in the first paragraph.

【单选题】鱼龙的呼吸方式是()。

A.
用肺呼吸
B.
用鳃呼吸
C.
幼年时用肺呼吸,成年后用鳃呼吸
D.
幼年时用腮呼吸,成年后用肺呼吸

【单选题】鱼龙的呼吸方式是:( )

A.
用肺呼吸
B.
用鳃呼吸
C.
幼年时用肺呼吸,成年后用鳃呼吸
D.
幼年时用腮呼吸,成年后用肺呼吸