下列能引起血钾浓度降低的是（） A.创伤 B.高热 C.饥饿 D.呕吐 E.缺氧

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问题单项选择题 A1/A2型题

下列能引起血钾浓度降低的是（）

A.创伤

B.高热

C.饥饿

D.呕吐

E.缺氧

答案

参考答案：D

解析：呕吐时，大量钾随胃液一起丢失，体内总钾降低，血清钾随之降低。创伤、高热时钾升高，饥饿、缺氧变化不大。

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A Picture of Our School

Look! This is a picture of our school. There is a tall building in the middle of the picture. There is a big

playground in front of the building. There are many trees and flowers near the playground. The trees are green.

The flowers are red and yellow. And there are many boys and girls on the playground. They're playing games.

There is a house near the building. It's our school library (图书馆). And our department (公寓) is next to it.

We all like our school very much.

( ) 1. There is a big playground in the middle of the picture.

( ) 2. This is a picture of their school.

( ) 3. There are many flowers and trees in our school.

( ) 4. Many students are playing games on the playground.

( ) 5. Our school library is near the tall building.

填空题

农业机械化技术推广统计的内容主要包括（）、（）、（）、项目统计、技术推广统计、效益统计等。