题目内容

Some people waste food，________other people haven’t got enough to eat.
A．whenB．untilC．sinceD．while
D
本题考查连词。when 当什么时候，until 直到，since 自从，while “而，但”，表示前后意义的转折对比，句意：一些人浪费食物，然而一些人没有足够的食物吃。所以选D。
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