正确答案: A

物质循环包括碳循环、磷循环、水循环、氮循环等

题目：下列有关物质循环叙述正确的是( )

解析：A

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举一反三的答案和解析：

[单选题]Which of the following statements is NOT TRUE?

In his childhood he made up his mind to become a doctor.

解析：此题为三正一误的细节题。在短文中没有说明巴斯德是否决心成为一名医生，只是提到他得到了博士学位。因为英语中doctor一词有两个含义：医生和博士。

[单选题]What could the girl in the ticket office do for the passengers without asking the computer?

She could do nothing.

解析：

37．答案为D  根据文章中的对话：售票员不能卖机票，回答不出旅客提出的问题等等，可推知此题答案为D。

[单选题]李清照《声声慢》(寻寻觅觅)一词最突出的语言技巧是（ ）

叠字

[单选题]According to the passage, both "popular" words and "learned" words ______.

can help people to get a better comprehension of the language.

解析：答案为B。根据第二段最后一句，And the distinction between them and "popular" words is of great importance to a right understanding of the language作出该项选择。

[单选题]The four men didn't feed the cows because______.

Mr. Johns wasn't at home

解析：

52．答案为A  从第一段内容和四个选项的比较来看，可知因为主人不在家才使奶牛挨饿。