2019年mba考试英语模拟题——连词579

{01}Henry failed in the game, but he looked ______ nothing had happened.  
A.even if      
B.as if            
C.such as          
D.ever since

解析：
本题选B。

{02}We must take measures to stop various kinds of pollution ______ the environment gets worse.
A.unless    
B.until    
C.before    
D.when
解析：
本题选A。