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【单选题】
雏鸡发生脑软化症主要是缺乏下列哪种维生素
A.
VA
B.
VD
C.
VE
D.
VK
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Today millions of Americans vacation abroad.
B.
Many Americans go abroad with the hope to meet a confidant.
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Not many American like to stay in one place for a lifetime.
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A.
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视网膜动脉比静脉细
B.
视乳头在黄斑鼻侧
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视网膜动脉比静脉颜色鲜红
D.
视乳头在黄斑颞侧
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【简答题】The earth of today is not that it was millions of years ago.
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【简答题】Today Newtown is a clean place, but many years ago there were millions of rats there. The rats even attacked (攻击 ) the cats and dogs. Sometimes many of them tried to bite men or women at night. The ra...
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【单选题】Which of the following is NOT TRUE according to the passage?
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D.
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4.0
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C.
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A.
视网膜动脉比静脉细
B.
视乳头在黄斑鼻侧
C.
视网膜动脉比静脉颜色鲜红
D.
视乳头在黄斑颞侧
E.
视乳头中央有凹陷
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