A. so; that

　　B. as; as

　　C. not only; but also

　　D. both; and

　　解析:so...that...表示“如此……以至于……”，与句意最相符。

　　答案:A

　　

　　(1)so +adj./adv.+ that...表示“如此……以至于”，that可省略；当so和它所修饰的形容词或副词放在句首时，主句倒装。

　　The book is so interesting that I want to read it again. =So interesting is the book that I want to read it again.

　　这本书是如此有趣，以至于我还想再读一遍。

　　There are so many mistakes in your article that I can’t understand the meaning. =So many mistakes are there in your article that I can’t understand the meaning.

　　你文章中的错误太多了，以至于我都无法理解其意思。

　　（2）在so...that句型中也可以使用名词，结构如下：

　　so + few/many+可数名词复数+that

　　so + little/much+不可数名词+that

　　so +adj.+ a(n)+名词+that=such + a(n)+adj.+名词+that

　　It was so cold a day that the ice in the river was nearly two feet thick.=It was such a cold day that the ice in the river was nearly two feet thick.

　　天气是如此之冷，以至于河里的冰结得都有两英尺厚了。

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