×
单选题
____ has been found out ___ oil food is bad for our health.
A
That; that
B
That; what
C
It; what
D
It; that
答案解析
正确答案：D
解析：
这道题考察的是定语从句的用法。正确答案是D: "It; that"。
在这个句子中，"has been found out"是主句，"oil food is bad for our health"是主句的内容。定语从句用来修饰先行词"oil food"，所以我们需要使用关系代词"that"来引导定语从句。另外，"it"作为形式主语，代替了整个主句"oil food is bad for our health"，所以正确答案是D: "It; that"。
举个例子来帮助理解：It is well-known that eating too much fast food is bad for our health. In this sentence, "It" refers to the fact that eating too much fast food is bad for our health, and "that" introduces the clause "eating too much fast food is bad for our health". So, the structure is similar to the original sentence in the question.
在这个句子中，"has been found out"是主句，"oil food is bad for our health"是主句的内容。定语从句用来修饰先行词"oil food"，所以我们需要使用关系代词"that"来引导定语从句。另外，"it"作为形式主语，代替了整个主句"oil food is bad for our health"，所以正确答案是D: "It; that"。
举个例子来帮助理解：It is well-known that eating too much fast food is bad for our health. In this sentence, "It" refers to the fact that eating too much fast food is bad for our health, and "that" introduces the clause "eating too much fast food is bad for our health". So, the structure is similar to the original sentence in the question.
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