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【单选题】
下列细胞中，(    )是快速分裂的细胞。
A.
神经元    
B.
唾液腺细胞
C.
肝细胞    
D.
红细胞和白细胞
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【简答题】阅读并完型填空。 The Spring Festival is the 1__________ New Year's Day. It is a 2__________ day in China. Everyone in China 3__________ it very much. When Spring Festival comes, We 4__________ our house. Ever...
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B.
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【单选题】传染源包括传染病患者、受感染的动物,还包括的
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【简答题】强化练习 1. Complete the sentences with the proper forms of the given words or phrases. free; look one’s best; current; ridiculous; start with; endure; former; ...
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【简答题】More than 100 trees_____ ( plant / were planted ) in our school last spring. 2. The windows of the room_______ ( clean / are cleaned ) every day. 3. Your bicycle_____ ( must not put / must not be put ...
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【简答题】阅读并完型填空。 The Spring Festival is the 1__________ New Year's Day. It is a 2__________ day in China. Everyone in China 3__________ it very much. When Spring Festival comes, We 4__________ our house. Ever...
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【单选题】传染源包括传染病患者、受感染的动物,还包括有
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