土壤圈的功能有哪些

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问题:

土壤圈的功能有哪些

考点:土壤肥料学土壤的形成、分类及分布土壤的形成、分类及分布题库
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犬细小病毒血凝试验应用的红细胞是()

A.鸡的红细胞

B.鸭的红细胞

C.犬的红细胞

D.绵羊的红细胞

E.猪或恒河猴的红细胞

题型:问答题 简答题

第一次世界大战期间,法、德两国是交战双方的主要成员,萨拉热窝事件之后,德国首先向法国宣战,其后法国也对德宣战。请思考,在宣战之前,双方政府要经过哪些程序[ ]

A、德国:首相经过议会同意宣战;法国:总统直接宣战

B、德国:议会直接宣战;法国:议会直接宣战

C、德国:皇帝直接宣战;法国:总统提出法案,国防部长副署,议会同意后总统宣战

D、德国:皇帝提出法案,议会同意后宣战; 法国:总统直接宣战

题型:问答题 简答题

阅读理解。

     When you are little, it's not hard to believe you can change the world. I remember my enthusiasm when,

at the age of 12, I addressed the people at the Rio Earth Summit. "'I am only a child," I told them. "Yet I know

that if all the money spent on war was spent on ending poverty and finding environmental answers, what a

wonderful place this world would be. At school you teach us not to fight with others, to work things out, to

respect others, to clean up our mess, not to hurt other creatures, to share, not to be greedy. Then why do you

go out and do the things you tell us not to do. You grown-ups say you love us, but I challenge you, please, to

make our actions reflect your words."

     I spoke for six minutes and received a standing ovation. Some of the people even cried. I thought that

maybe I had reached some of them, that my speech might actually spur (刺激) action. Now, ten years from

Rio, after I've sat through many more conferences, I'm not sure what has been achieved. My confidence in

the people in power and in the power of an individual' s voice to reach them has been deeply shaken.

     When I was little, the world was simple. But as a young adult, I'm learning that as we have to make choices-

education, career, lifestyle-life gets more and more complicated. We are beginning to feel pressure to produce

and be successful. We are taught that economic growth is progress, but we aren't taught how to seek a happy,

healthy way of living. And we are learning that what we wanted for the future when we were 12 was idealistic

and naive (天真).

     Today I'm no longer a child, but I'm worried about what kind of environment my children will grow up in.

I know change is possible, because I am changing, still figuring out what I think. I am still deciding how to live

my life. The challenges are great, but if we accept individual responsibility and make choices, we will rise to

the challenges, and we will become part of the positive tide of the change. I hope this goal will be met through

our common efforts. Thank you all.

1. The purpose of what the speaker said at the age of 12 was to _____. [ ]

A. end poverty and make school beautiful

B. find environmental answers and show off

C. focus people's attention on some social problems

D. find a wonderful place and clean it up

2. What does the underlined word "ovation" in the second paragraph refer to? [ ]

A. A long period of laughing.

B. A cold and unfriendly welcome.

C. An expression used for greeting.

D. Great applause or cheering.

3. The information in the text is presented mainly through _____. [ ]

A. question and answer

B. a personal lecture

C. cause and effect

D. listing steps in a process

4. Which of the following best describes the speaker? [ ]

A. He is an experienced educator.

B. He is an'impolite man.

C. He is a man of great worries.

D. He is a man of social responsibility.

题型:问答题 简答题

小脑幕上慢性硬膜下血肿的治疗多可采用()

A.去除血肿

B.简单的钻孔引流

C.采用高渗脱水药物

D.应用大剂最激素

E.等待自行吸收

题型:问答题 简答题

FTP的中文意义是( )。

A.高级程序设计语言

B.域名

C.文件传输协议

D.网址

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