2019年mba考试英语模拟题——连词570

{01}The school rules state that no child shall be allowed out of the school during the day,__________
accompanied by an adult.  
A.once              
B.when  
C.if                  
D.unless
解析：
本题选D。

{02}      we are not attacked by nuclear weapons, we promise that uncler no circumstances       use
the bomb first but we rescrve the right to use it for counter-attack when necessary.      
A.As long as; we shall      
B.If; shall we      
C.So long as; shall we      
D.Even if; we shall
解析：
本题选C。