沥青混凝土防渗层，（）mm细小的非惯穿性裂缝都能自行闭合，一般不必处理。
A、1
B、2
C、3
D、4
参考答案：A
According to the present findings, we can draw a conclusion _____ so far a large number
of people have died of cholera in this town. [ ]
A. whether
B. that
C. what
D. if
患者，女，35岁，已婚。月经40～50天一行，经期7天，量少，经期伴小腹隐痛不适。应首先考虑的是（）
A.月经后期
B.月经过少
C.妊娠
D.激经
E.痛经
