下图为中国水稻分布图。读图回答问题。(11分) (1)水稻集中产区主要分布在。

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问题:

下图为中国水稻分布图。读图回答问题。(11分)

(1)水稻集中产区主要分布在 。南方地区,水稻集中产区与水稻分散产区地区分布差异的主导因素是 ,单季稻产区与双季稻 产区地区分布差异的主导因素是 

(2)我国西北地区宁夏平原若大规模种植水稻,将产生哪些不利影响? 

(3)武汉在历史上是我国大米集散地之一。如果在武汉建立国家大米交易中心,请分析武汉建立大米交易中心的有利区位条件。

(4)为了实现农业可持续发展,有人建议我国水稻集中产区实行休耕制度。你认为是否可行?理由是 

考点:区域联系与区域协调发展产业转移资源的跨流域调配区域经济发展与区域联系
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基金分红分为现金分红和红利再投资两种形式,一般银行系统默认现金分红。 ( )

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阅读理解。

    The Internet has become part of teenagers' life.

    A news report on 3,375 students aged from 10 to 18 in seven Chinese cities found

that 38 per cent of them believe they use the Internet often.

    While most of them get useful information and use the Internet to help in their

studies, some are not using it in a good way. Many are playing online games too much.

A few even visit Web sites they should not look at. A middle school teacher from Beijing

warns that bad things can happen if young people spend too much time on the Internet.

She had a student who used to be good at school. But then he started visiting sex Web

sites. He went mad, cheated a girl and was taken away by the police.

    In order to help young people use the Internet in a good way, a textbook on good

Internet behavior has started to be used in some Shanghai middle schools this term. The

book uses real examples to teach students all about good ways of using the Internet. The

book gives useful advice such as it's good to read news or find helpful information to

study.

    Some students also make online friends. But if you are meeting a friend offline, make

sure your parents know. Teachers and parents all think the book is a very good idea.

This teacher said the book will be a guide for teens using the Internet. She believes it will

keep students away from bad sites. "Many students are using the Internet without guidance

from their parents," she said. "The book will teach students how to be a good person in

the online world."

1. The third paragraph mainly tells us that ______. [ ]

A. some students are not using the Internet correctly

B. all students in Beijing use the Internet to help their school work

C. a teacher in Beijing is worried about her students

D. some students visit sex Web sites

2. The textbook mainly tells us ______. [ ]

A. why we should use the Internet

B. not to visit sex Web sites

C. how to use the Internet correctly

D. how to get help from others

3. The writer advises the readers to ______. [ ]

A. let their parents know before visiting their online friends

B. not to make friends on line

C. read the textbook carefully

D. only read news on the Internet

4. From this passage we know that ______. [ ]

A. more and more students have given up visiting bad Web sites

B. schools and teacher begin to pay attention to students' use of the Internet

C. no more homework will be given in Shanghai

D. less and less information can be found on line

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筷子是我国古代劳动人民的伟大发明,用筷子夹菜时,筷子是杠杆,它的动力是        对          的作用力,一般来说,筷子是动力臂         阻力臂的杠杆.(填“大于”“小于”或“等于”)

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预报下面哪种天气现象开始、终止(没有“强度变化时”)时,应使用机场预报变化组或进行机场预报修订。()

A、飑

B、小阵雨

C、毛毛雨

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按照送货对象的不同,订货分为()和统配商品订货两种类型。

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