It is well known _________ a person eats causes changes in the body.

it is well known____a person eats causes changes~

这里what 引导的宾语从句直接作宾语，不用that引导。

B 试题分析：句意：一个人吃的东西会导致身体的改变这是众所周知的。这句话是It is well known that…句型，it是形式主语，that引导的是真正的主语从句，在that引导的主语从句中也有个主语从句，而且这个主语从句缺少宾语，用what连接，选B。

这句话是主语从句，真正的主语是
what a person eats，是主语从句。 开始的it 是形式主语。

因为eat 是及物动词，所以需要宾语。 这里只有what可以做eat的宾语。
what a person eats，意思是 “人们吃的东西。”

整句话的意思是：
人们吃的东西引起我们身体的变化是众所周知的。

如果满意请及时采纳，如果还有疑问请继续追问，谢谢

选c
首先我们看到it is句型的时候很容易想到强调句，判断强调句的方法很简单，把it is ```that去掉看句子是不是完整的，是完整的就是强调句型
这题把it is··和空格去掉会发现well known```不是完整的句子，所以不是强调句
那我们还学过主语从句
这题就是it作为形式主语，而正真的主语是后面的从句，从句eat少宾语,that在主语从句中不做任何成分，when和how做的是状语，只能选what，在从句中可做主，宾表语

应该选C。

well known 后面的that可有可无，是可以省略的。但如果用A的话what,when and how 三件事情，相当于复数的主语，后面动词就应该用cause,而不是第三人称单数的causes。

希望满意，祝您进步

我认为填 that what

我觉得是B

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翼城县13198528648： It is well - known - ？
博侍金格：[答案] It is well-known that网 络大家知道;大家都知道;是众所周知的双语例句1.It is a formula that worked very well indeed.\x09这的确是一套很管用的方案.来自柯林斯例句2.It is well established that the cardial ...

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博侍金格：[答案] 这么说吧,As is well known你可以把它当成一个形容===词“这是众所周知的”,所以,一般加连接词,解释一下“这”指代的是什么

翼城县13198528648： 阅读理解.      It is well known that the Japanese people's love of fish is almost as strong as a bee's interest in honey. As fish populations were ... - ？
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博侍金格：[答案] cleverest ; tell; talk; wants; child; sentence; uses; different; way; question

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博侍金格：[答案] it's well known that Beijing has hosted the 2008 Olympic Games

翼城县13198528648： it is well known that what when and how a person eats causes changes in the body - ？
博侍金格： 这个句子中的it是形式主语,它代替后面由that引导的真正主语从句,这个that无实际汉语意义,仅仅表示后面的句子是一个从句.后边的主语从句中:what ,when and how 引起一个小主语从句(what, when and how a person eats) 这个小主语从句中what 作eats的宾语,when 和 how 作状语,修饰eats.a person 主语, eats 谓语.causes 是这个小主语从句的谓语,changes 宾语 ,in the body 介词短语作定语修饰changes .

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翼城县13198528648： it is well known that是什么意思 - ？
博侍金格： it is well known that[英][it iz wel nəʊn ðæt][美][ɪt ɪz wɛl non ðæt] 众所周知; 例句:1.It is well known that china's millions of amateur property speculators want prices to stay strong. 众所周知,中国数百万业余炒房者希望房价保持坚挺.2....

翼城县13198528648： Wellknown什么意?Wellknown什么意思 ？
博侍金格： wellknown adj. 着名的,著名的; [例句]It is wellknown that Taiwan is a part of china. 众所周知台湾是中国的一部分.