If unsolved, the problem of food safety may lead to more serious results.
题型：不详难度：来源：
If unsolved, the problem of food safety may lead to more serious results.| A．having left | B．to leave | C．left | D．leaving |
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答案
| C |
解析
试题分析：句意：如果食品安全问题被任由不解决，就会导致更严重的后果。这是一个状语从句的省略句，完整的句子是：If the problem of food safety is left unsolved，当主从句的主语一致的时候，可以省略从句的主语和be动词，选C。 |
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