[D30] The fact has worried many scientists ____ the earth is becoming warmerand warmer these years. A. what B. which C. that D. though 请翻译,并分析.答案 C

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[D30] The fact has worried many scientists ____ the earth is becoming warmerand warmer these years.  A. what         B. which         C. that         D. though 请翻译,并分析.答案 C

[D30] The fact has worried many scientists ____ the earth is becoming warmerand warmer these years. A. what B. which C. that D. though 请翻译,并分析.答案 C
[D30] The fact has worried many scientists ____ the earth is becoming warmer
and warmer these years.
A. what B. which
C. that D. though
请翻译,并分析.
答案 C

[D30] The fact has worried many scientists ____ the earth is becoming warmerand warmer these years. A. what B. which C. that D. though 请翻译,并分析.答案 C
翻译:地球这些年以来正在变得越来越暖和,这个事实已经使很多科学家忧心忡忡.
解释:此题考查同位语从句的引导词.
1. 主句是The fact has worried many scientists,而后面的从句为同位语从句,修饰主句主语the fact,补充解释它(即该事实)的具体内容.
2. 同位语从句和宾语从句/主语从句/表语从句一样,都属于名词性从句,其引导词也分为三种:
如果从句不缺少任何成分,则用that引导;
如果从句缺少表“是否”之意的疑问,则用whether引导;
如果从句缺少其他成分,则必须根据句意要求选择适当的疑问词进行补充.
3. 该从句the earth is becoming warmer and warmer these years并不缺少任何成分,所以只须用that引导即可;
而A表示从句中缺少表sth(事物)的名词性成分,错误;
which如果引导名词性从句,意思是“哪一个”,句意不通;
though只能引导让步状语从句,而不能引导同位语从句,排除.

选C
The fact (that the earth is becoming warmer and warmer these years) has worried many scientists.同位语从句,修饰the fact
意思:这些年来地球在不断地变的越来越温暖,这个事实让科学家们非常担心。

1楼的完全没好好看题目,根本不是什么主语从句
首先,the earth is becoming warmer这个从句是宾语从句,排除D,though不能引导宾语从句
,另外3个词的区别在于在宾语从句中所做的成分:
that引导宾语从句时不做任何成分,
which做主语或者宾语(必须作从句的某一成分)
what做主语或者宾语(必须作从句的某一成分)
...

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1楼的完全没好好看题目,根本不是什么主语从句
首先,the earth is becoming warmer这个从句是宾语从句,排除D,though不能引导宾语从句
,另外3个词的区别在于在宾语从句中所做的成分:
that引导宾语从句时不做任何成分,
which做主语或者宾语(必须作从句的某一成分)
what做主语或者宾语(必须作从句的某一成分)
the earth is becoming warmer这个句子语意完整,不缺成分,所以用that引导
希望能帮到你,祝你开心,进步^_^有问题给我留言哦

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这句话考察的是主语从句,____ the earth is becoming warmer and warmer these years. 是前面提到的fact的定语从句,作为解释说明fact的。所以选择C。希望能够帮到楼主
晓篱 敬上