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【单选题】
下列属于水溶性维生素的是( )A.
维生素A
B.
维生素E
C.
维生素C
D.
维生素D
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【简答题】tRNA的二级结构呈 型,三级结构呈 形,其3′端有一共同序列 ,其功能是 。
【简答题】Long long ago a man went to India and he had never been there before. When he got there, he saw a lot of fruit, but much of it was expensive because they couldn’t grow much because there was little wa...
【单选题】He had had a long and uncomfortable trip, for he had been confined to the wooden box for over eighteen hours. 划线部分的意思是:
A.
为了
B.
因为
C.
给
【简答题】下列项目中，能使负债增加的是（ ）。
【简答题】Len was thirty years old, and he had very long hair, He lived in a big city, but one year he did not find any work there, so he went to a small town and began looking for work there. He went to a lot ...
【简答题】He had a long and ________ career.
【简答题】关于tRNA的结构及功能：组成tRNA的核苷酸大约（）个，tRNA3′末端三个核苷酸顺序是（）；二级结构呈（）形；三级结构呈（）形，其两端的功能分别是（）和（）。
【简答题】阅读短文,判断正(A)误(B) Len was thirty years old, and he had very long hair, He lived in a big city, but one year he did not find any work there, so he went to a small town and began looking for work there. H...
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