2019年mpa考试英语真题——连词535

{01}The landslide almost flattened the small town of Zhouqu, leaving 1,248 dead and 496 missing. I wonder how long it will be ____ the people there get over the shock.
A.before
B.when
C.since
D.after
解析：
本题选A。

{02}Experts are trying to work out a solution to save the miners _____ its too late. A.before
B.since
C.unless
D.when
解析：
本题选A。