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问题 单项选择题

致龋性最强的糖为

A．葡萄糖

B．乳糖

C．木糖醇

D．蔗糖

E．果糖

答案

参考答案：D

单项选择题

A小麦细胞具有而蓝藻细胞中没有的结构是（）

A.细胞壁

B.核膜

C.细胞膜

D.细胞质
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单项选择题

An investor would most likely expect commodities to have correlations with traditional stock or bond investments and inflation, respectively, that are: Correlation with inflation Correlation with traditional stock or bond investments（）①A. positive positive ②B. positive negative ③C. negative positive

A. ①

B. ②

C. ③
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