问题 单项选择题

下列有关生物圈的表述有误的一项是( )。

A.生物圈是由大气圈、水圈、岩石圈、土壤圈这几个圈层的交接的界面所组成的

B.生物圈为生物的生长和繁殖提供了必要的物质和所需要的能量

C.生物圈是地球上最大的生态系统,包含着无数小的生态系统

D.生物圈中各种生命体物质以太阳能为动力,进行着小范围内的循环

答案

参考答案:D

解析:选项D的正确表述为“生物圈中各种生命体物质以太阳能为动力,进行着大规模的能量和物质(元素)的循环。”生物圈总处在不断发展变化之中,他的每个发展阶段具有历史形成的相对稳定的物质结构和组成。生物圈现阶段的物质生态平衡是生物有机体与其栖居的自然环境经过长期相互作用、协调适应共同形成的。

阅读理解

根据短文内容,回答下列问题。

     What would you do if you had a ticket for an exciting movie which you want to see very much?

Maybe you would say'' I would like to go to movies." But unluckily,  you will have to get ready for the

math exam tomorrow. What would you do this time? Go to movies or get ready for the exam? If your

answer is giving up seeing movies and working hard for the exam~ we say you have strong self-control.

Self-control is not anything you have with your birth, it needs to be cultivated in your mind.  Sometimes

you are attracted by one of the stories that is not worth reading.  You shouldn't waste your time reading

such a story, or you will feel sorry later.

     Don't go to bed late because of a nice TV movie, or you will go to school late. Neither should you

stay in bed too late on cold mornings, for it is a waste of time. Every one of us has some habits,  a few

of which might keep us from making progress in life. Then we must use our self-control to become free

of them.

     Remember it is necessary for you to cultivate strong self-control.

1. What do most people do if they get a ticket for an exciting movie which they want to see?

                                                                                    

2.  If one has strong self-control, does he go to movies or get ready for the exam?

                                                                                    

3.  Is self-control anything you have with your birth?

                                                                                    

4.  What kind of stories can attract you sometimes?

                                                                                    

5.  What's the main idea of this passage?

                                                                                    

单项选择题