_____ turned out that this material was neither silk nor cotton.
A．ThatB．ItC．WhatD．Which
B

試題分析:句意：結(jié)果表明這種材料既不是絲綢也不是棉。固定句型：it turned out that ……“原來是，結(jié)果是”， 在此結(jié)構(gòu)中that this material was neither silk nor cotton.是主語從句，it是形式主語，答案選B。
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