确定钢筋下料长度，应考虑()等因素。P156
A.保护层厚度
B.钢筋级别
C.加工设备
D.弯钩要求
E.钢筋直径
参考答案：A, B, D, E
将下列句子变成复数形式。
1. This is a living room.
____________________________
2. This is a kitchen.
3. This is a bathroom.
4. This is a closet.
_____________________________
Nowhere _______ us; we still don't know the answer. [ ]
A. will this argument lead to
B. this argument leads to
C. has this argument led to
D. leads this argument to
