题目内容
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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