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Since the baby milk powder was found to be polluted, there has been universal doubt _____ other food products are safe _____.

A.that; to eat B.whether; to be eaten
C.whether; to eat D.that; to be eaten

C

解析试题分析:本题中的名词doubt后面是一个同位语从句,因为前面的doubt用语肯定句中,所以使用whether引导该同位语从句,表示不确定的事情。第二空使用不定式to eat对句子的主语other food进行补充说明。因为safe是对主语的性质特征进行的说明,故使用不定式的主动语态。如:The problem is easy to solve。这个问题很容易解决。句义:既然婴儿奶粉被发现已经被污染了,很多人都怀疑其他的食物是否可以安全食用。故C正确。
考点:考察同位语从句和不定式用法

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