[单选题]Let us hope we can settle the matter without ______ more trouble.
正确答案 :A
any
解析:without表示否定意义,所以需用any。
[单选题]关于反射的论述,下列选项错误的是 ( )
正确答案 :D
同一刺激所引起的反射效应应当完全相同
[单选题]Mary's parents are worried about Mary because no one was aware ______ she had gone.
正确答案 :A
of where
解析:20.Aware of固定词组,意为:意识到。选项 A是正确的。
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