Question

If ____ unsolved, the problem of food safety may lead to more serious results.

A．making

B．remained

C．left

D．taking

 

Answer 1

【答案】

C

【解析】考查省略句。The problem与leave构成被动关系，使用过去分词。完整的结构应该是If the problem is left unsolved, the problem of food safety may lead to more serious results.句意：如果这个问题被留在没有被解决，它会导致更严重的后果。