重型α-地中海贫血又称HbH，是指3个α珠蛋白基因缺失或缺陷。()_爱下问搜题

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问题判断题

重型α-地中海贫血又称HbH，是指3个α珠蛋白基因缺失或缺陷。()

答案

参考答案：错

选择题

In our school library there ______ a number of books on science and the number of them ______
growing larger and larger.

A. are; is
B. is; are
C. have; are
D. has; is

名词解释

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