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问题 选择题

钾是维持人体生命和植物生长所必须的元素。下图是从元素周期表中得出的部分信息。下列关于钾元素的有关叙述错误的是

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A．钾元素的原子序数为19

B．钾元素在人体及植物体内以单质形式存在

C．钾元素的相对原子质量为39.10

D．施用草木灰，可给农作物补充钾元素

答案

答案：B

阅读理解

阅读下面的短文，选择正确的答案。

      Hi, I'm Wu Yifan. I'm going to have a busy weekend! On Saturday, my father is going to buy some

newspapers. My mother is going shopping. I'm going to visit my friend, Mike. On Sunday, my father is going

to read a magazine. My mother is going to watch TV. I'm going to the bookstore. I'm going to buy a dictionary.

After that we are going to the cinema.

1. — What is Wu Yifan's father going to buy on Saturday?  — He is going to buy some ____________.

A. newspapers

B. magazines

C. comic books

2. — Where is Wu Yifan going on Sunday?  — He is going to the ____________.

A. supermarket

B. bookstore

C. library

3. — After that where are they going?  — After that they're going to the ____________.

A. post office

B. museum

C. cinema
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单项选择题

社区营养资料信息不包括（）。

A.人口调查资料

B.膳食营养调查资料

C.个人生活资料

D.经济状况
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