单选题：The student is afraid to answer the teacher's question.

题目内容：

The student is afraid to answer the teacher's question. A．hope
B．use
C．help
D．reply

参考答案：

答案解析：

It is impossible to complete the task in a day.

It is impossible to complete the task in a day.A．probable B．usual C．unlikely D．h

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冬期施工混凝土搅拌时，当仅加热拌合水不能满足热工计算要求时，可直接加热的混凝土原材料是（　　）。A．水泥 B．外加剂 C．矿物掺合料 D．热骨料

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居住建筑护栏高度、栏杆间距、安装位置要求错误的是（　　）A．低层、多层住宅的临空处栏杆，栏杆净高不应低于1.0m（24m以下） B．中高层、高层住宅的临空处栏杆

分类：综合类题型：单选题