2019年mpa考试英语真题——介词和介词短语433

{01}No one can attain great achievements ________ he concentrates on what he is doing, even though a talent．
A.because
B.while
C.unless
D.if
解析：
本题选C。
{02}Do you know when the Anti-Japanese War ________?
A.broke out
B.broke up
C.broke in
D.broke off
解析：只有A项才表示“爆发”的意思。
本题选A。