问题 选择题

下面哪项不是动物对植物的积极作用(  )

A.许多昆虫能帮助植物传粉

B.浮游动物大量繁殖,阻挡了阳光照射到浮游植物上

C.动物的粪便为植物提供养料

D.动物能促进植物的繁殖和分布

答案

自然界中的动物和植物在长期生存与发展的过程中,形成相互适应、相互依存的关系.动物能够帮助植物传粉,使这些植物顺利地繁殖后代,如蜜蜂采蜜.动物能够帮助植物传播果实和种子,有利于扩大植物的分布范围.如苍耳果实表面的钩刺挂在动物的皮毛上.动物作为消费者,直接或间接地以植物为食,通过消化和吸收,将摄取的有机物变成自身能够利用的物质.这些物质在动物体内经过分解,释放能量,同时也产生二氧化碳、尿液等物质.这些物质可以被生产者利用,动物排出的粪便或遗体经过分解者的分解后,也能释放出二氧化碳、含氮的无机盐等物质.可见,动物能促进生态系统的物质循环,为植物提供养料.故B的说法不符合题意.

故选:B.

材料分析题

材料一:今年以来,美国次贷危机不断恶化,对世界金融市场形成强烈的冲击,国际经济增速放缓,我国经济发展也受到了明显的影响,出现增速减缓的运行态势。党中央、国务院审时度势,对宏观调控政策作出重大调整,实施积极的财政政策和适度宽松的货币政策,安排4万亿元资金启动内需,连续五次降低存贷款利率并多次降低存款准备金率,以保持经济稳定增长。

材料二:在金融危机冲击下,大学生就业难问题受到社会关注。制约我国大学生就业的几大因素如下:

(1)结合材料一,运用经济常识简要说明我国当前实行适度宽松的货币政策和积极的财政政策促进经济平稳较快发展的作用。

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(2)结合材料二,从经济常识角度谈谈如何解决大学生就业难的问题?

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阅读理解

阅读理解。

     When I met him, I had a lot of anger inside of me. I've lived my whole life in Spanish Harlem, but in my

neighborhood, there are shoot-ups all the time. I know kids who have been shot or beaten up. I have friends

who ended up in prison. I could have ended up that way, too, but Mr. Clark wouldn't let that happen.

     Mr. Clark worked long hours, making sure I did my work. My grades rose. In fact, the scores of our

whole class rose. One day, he took our class to see The Phantom of the Opera, and it was the first time some

kids had ever been out of Harlem. Before the show, he treated us to dinner at a restaurant and taught us not

to talk with our mouths full. We did not want to let him down.

     Mr. Clark was selected as Disney's 2000 Teacher of the Year. He said he would draw three names out of

a hat; those students would go with him to Los Angeles to get the award. But when the time came to draw

names, Mr. Clark said, "You're all going."

     On graduation day, there were a lot of tears. We didn't want his class to end. In 2001, he moved to Atlanta,

but he always kept in touch. He started giving lectures about education, and wrote a best-selling book based

on his classroom rules, The Essential 55.

     In 2003, Mr. Clark took some of us on a trip to South Africa to deliver school supplies and visit orphanages

(孤儿院). It was the most amazing experience of my life. It's now my dream to one day start a group of

women's clubs, helping people from all backgrounds.

1. Without Mr. Clark, the writer ____.

A. might have been put into prison

B. might not have won the prize

C. might have joined a women's club

D. might not have moved to Atlanta

2. The Essential 55 is ____.

A. a show

B. a speech

C. a classroom rule

D. a book

3. How many students' names were finally drawn out of a hat by Mr. Clark?

A. None.

B. Three.

C. Fifty-five.

D. All.

4. What can we learn from the passage?

A. It was in Harlem that we saw The Phantom of the Opera for the first time.

B. Mr. Clark taught us not to talk with our mouths full, and we did.

C. Mr. Clark was selected as Disney's 2000 Teacher of the Year in Los Angeles.

D. In 2003, Mr. Clark moved to Atlanta, and he always kept in touch with us.

5. In the passage, the writer intends to tell us that ____.

A. Mr. Clark went to South Africa because he liked travelling

B. Mr. Clark helped to set up a group of women's clubs

C. a good teacher can help raise his or her students' scores

D. a good teacher has a good influence on his or her students