2019年mpacc考试英语真题——连词392

01}I was surprised by his words ,which made me recognized ______silly mistakes I had made .

A.what

B.that

C.how

D.which

解析：
这题考查what引导的宾语从句，what修饰silly mistakes，句意是：我听到他的话很吃惊，这使我认识到我犯了多么愚蠢的错。
本题选A。

{02}You can’t appreciate happiness _______ you have known sadness too.

A.because

B.when

C.though

D.unless

解析：考查连词用法。句意为除非你知道悲伤，你就不能感激幸福。unless =" if" not
本题选D。