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单选4-10

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______ state factories aren't going down. Many of them are developing quickly. A.Not all B.Not all the C.The all D.All the 答案是D,我选了A,能分析下吗? thanks very much~~
单选4-10
解题思路: "all/ both/ each+谓语动词 +not..."构成部分否定。例如: All the answers are not right. (=Not all the answers are right.)并不是所有的答案都正确。
解题过程:
如果选A,前面的not 与 后面aren't 构成了双重否定,表示肯定意思.所以不能选.
此题正确答案D.
最终答案:略