阅读以下资料,回答问题. 澳大利亚的维多利亚省有一片广袤的草原,草原上主要生活着

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问题:

阅读以下资料,回答问题.

澳大利亚的维多利亚省有一片广袤的草原,草原上主要生活着袋鼠等食草类有袋动物,草原上没有猛兽.1859年,好事的移民从英国带来了12只欧洲野兔.这些野兔发现自己来到了天堂,澳大利亚没有鹰、狐狸这些天敌,与兔子生态地位相近的袋鼠对它们也没有竞争力,于是它们开始了几乎不受任何限制的大量繁殖.到了1907年,兔子已遍布整块大陆.由于兔子和牛羊争夺牧草,草原也遭到毁灭性的破坏,澳大利亚的畜牧业遭受到了巨大的损失.人们想尽了办法,筑围墙、打猎、捕捉、放毒等等,兔灾仍然无法消除.后来,澳大利亚人从国外将能够捕食兔子的狐狸引进草原,数年过去了…

请根据上述材料写出一条食物链:______;

你认为兔子可以在短时间内迅速繁殖的原因主要是:______

请你设想并描述数年或更多年后草原上可能出现的情形:______.

考点:食物链和食物网生态系统的自动调节能力
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细胞破碎的主要方法有机械破碎法、物理破碎法、()、()。

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压力表应该按照国家计量部门的规定进行定期校验。

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阅读理解。

     Your body, which has close relations with the food you eat,

is the most important thing you own, so it needs proper treatment

and proper nourishment (营养). The old saying"An apple a day

keeps the doctor away. "is not as silly as some people think. The

body needs fruits and vegetables because they contain vitamin C.

Many people take extra vitamins in pill form (丸剂) ,  believing

that these will make them healthy. But a good diet is made up of

nourishing food and this gives all the vitamins you need.  The body

doesn't need or use extra vitamins, so why waste money on them?

     In the modern western world, many people are too busy to

bother about eating properly. They throw away the good habits and

throw anything into their stomachs, eating hurriedly and

carelessly. The illnesses caused or made worse by bad, eating

habits are frightening.

1. From the first sentence we know that ____.   

A. the more you eat,the better you will feel

B. your body is made up of the food you eat

C. what you eat has great effect on your health

D. all kinds of food you eat can be made into your nourishment

2. How do you understand the old saying underlined in Paragraph 1? 

A. Doctors are no longer necessary if we eat an apple every day.

B. Eating apples regularly brings lots of benefits to our health.

C. The apple is the best among all kinds of fruits.

D. Eating apple is a good way to cure illnesses.

3. In modern western countries, ____.   

A. people are only too busy to cook meals for themselves

B. people don't want to pay more attention to their eating

C. people throw everything into their stomachs without digestion

D. lots of people's illnesses are caused or made worse by bad eating habits

4. If we want to keep healthy,we should _____ .   

A. eat properly

B. only eat an apple a day

C. take as many vitamin pills as possible

D. throw everything into our stomachs slowly and carefully

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2011年1月10日,日本《读卖新闻》发表社论:随着全球化的推进;要想应对经济危机、气候变化、恐怖主义以及核扩散等全球课题,离不开发达国家和发展中国家的协调。它表明[ ]

A.经济全球化的发展离不开发展中国家的参与

B.日本欲以此树立大国形象,充当全球化的领导者

C.发达国家是经济全球化的主要受益者

D.发展中国家力量增强,是全球化的主要受益者

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设函数f(x)具有三阶连续导数,且满足

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