2019年mpacc考试英语真题——名词422

{01}People think "SOS" is the simplest and common _____ to make, in time of danger or disaster.
A.mark
B.sign
C.signal
D.remark
解析：
本题选C。

{02}She offered me practical _____ with my research, for which I would appreciate for my whole life.
A.conduct
B.certificate
C.admiration
D.assistance
解析：
本题选D。