下列选项中，不属于植物对干旱环境适应特征的是 ( )A．具

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问题单项选择题

下列选项中，不属于植物对干旱环境适应特征的是 ( )

A．具有发达的根系
B．具有厚的肉质茎
C．叶片的角质层厚
D．叶片面积增大

答案

参考答案：D

选择题

It is reported that many anew house ____ at present in the disaster area. [ ]

A. are being built

B.were being built

C. was being built

D. is being built

问答题

盾构法隧道施工的优缺点。