问题 多项选择题

在《中华人民共和国电力法》中规定在规划电源布局和骨干电网结构时要充分考虑()

A.在水能资源丰富的地区,可以开发大批水电基地

B.在煤电资源丰富的地区,建设大型坑口电站

C.在风力资源丰富的地区,大力发展风力发电

D.在沿海地区,充分利用潮汐发电

E.在近期配合经济建设应大力发展核电

答案

参考答案:A, B, C

阅读理解与欣赏

阅读下面一篇文章,完成问题。

中华鲟

  中华鲟俗称腊子、鲟鱼、鳇鱼等,体形较大,一般体长为2.5米左右,体重约200千克。

  中华鲟是我国的特产珍稀物种,主要分布在长江水系,此外在辽河、黄河、淮河、钱塘江、闽江、珠江等水域也都有发现。它属于很原始的硬骨鱼类,其祖先与恐龙处于同一个时代,为白垩纪古棘鱼的后裔,距今已有一亿三千多万年的历史,故有“活化石”之称。在它的身上仍然保留着许多遗留下来的原始特征,如全身的骨骼大部分是软骨,体表有硬鳞,尾为歪形,有吸水孔,肠的里面有一个接一个的漏斗状螺旋瓣等。但也有一些现代硬骨鱼的特点,如具少数硬骨,有鳃盖,有较大的、仅有1室的鳔,繁殖为体外受精等。所以它是介于软骨鱼与硬骨鱼之间的一个过渡性类型,称为软骨硬鳞鱼类,在鱼类的起源和演化历史的研究上有着重要的科学研究价值。

  中华鲟具有溯河洄游的习性,是长江中洄游路线最长的。每年7-8月,在我国黄海、东海等东部沿海大陆架附近索饵、育肥的成体,纷纷汇聚于长江口等河口处,然后溯江而上,到产卵场所繁殖后代,冬季则在河床深槽等适宜的场所越冬。整个洄游过程大约历时一年,路途长达3000余公里。从进入长江以后,便开始绝食,在淡水中消耗的能量和性腺发育需要的物质,全靠在海中所积累的大量脂肪来供给。产卵场所位于长江上游的宜宾一带具有石质河床的江段,这里水流湍急,含氧量充沛,水质、水温非常适宜。幼体出生以后,便同成体一起,又开始顺流而下,最后返回大海中去成长。等到十余年后,性腺成熟之时,再溯河洄游,重返出生地产卵繁殖。由于中华鲟世世代代不忘故地,表现了对故乡的至诚至爱,在洄游的旅途中,还表现出了不惧艰险的坚强品格,因而成为中 * * 的象征。

  中华鲟成熟期长,生长周期长,繁殖率低。其寿命为50年左右,一般雄性11岁,雌性14岁才开始生殖。雌性相隔3-5年才产一次卵,在自然界成活率仅有1%。在产卵群体中,中老年个体多,繁殖率低,恢复率也低。所以经不起环境的剧烈变化,资源一旦遭到破坏,则要很长时间才能恢复。(选自2009年3月《百科知识》作者李湘涛有删改)

1.为什么把鲟鱼称为“中华鲟”?从文中找出相关的语句回答。

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2.阅读说明文要抓住事物的特征。请细读全文,用简洁的语言写出中华鲟的几个特点。

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3.仔细观察下面中华鲟的图片,用打比方或作比较的说方法介绍一下中华鲟的形体特点。(20字左右)

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4.请选出下列句子中删去加粗的词语对原句意思表达影响最小的一项(  )

A.中华鲟是我国的特产珍稀物种,主要分布在长水系。

B.这里水流湍急,含氧量充沛,水质、水温非常适宜。

C.整个洄游过程大约历时一年,路途长达3000公里。

D.其寿命为50年左右,一般雄性11岁,雌性14岁才始生殖。

阅读理解

阅读理解

     Homebuyers nationwide are watching housing prices going up, up, and up.“How high can they go?” is the question on everyone’s lips.“As long as interest rates stay around 5 percent, nothing might be able

to prevent housing prices going up, ” said one house seller in Santa Monica, California.

   “It’s crazy, ” said Tim, who is looking for a house near the beach.“In 1993, I bought my first place, a

twobedroom flat in Venice, for $70,000.My friends thought then that I was overpaying.Five years later, I

had to move.I sold it for $230,000, which was a nice profit.Last year, while visiting friends here, I saw in

the local paper that the exact same flat was for sale for $510,000!”

     It is a seller’s market.Homebuyers feel like they have to offer at least 10 percent more than the asking

price.Donna, a new owner of a onebedroom flat on Venice Beach, said, “That’s what I did.I told the

owner that whatever anyone offers you, I’ll give you $20,000 more under the table, so you don’t have to

pay your house seller any of it.I was tired of negotiating with the house sellers.”

     Tim says he hopes he doesn’t get that desperate.“Whether you decide to buy or not, you still feel like

you made the wrong decision.If you buy, you feel like you overpaid.If you don’t buy, you want to kick

yourself for passing up a great opportunity.”

     Everyone says the bubble (气泡) has to burst sometime, but everyone hopes it will burst the day after

they sell their house.Even government officials have no idea what the future will bring.“All we can say is

that, clearly, these things go in regular cycles, ” said the state director of housing.“What goes up must

come down.But, as we all know, housing prices always stay up a little higher than they go down (被接

受). So you can’t lose over the long run.Twenty years down the road, your house is always worth more

than you paid for it.”

1. If Tim had sold his flat last year, he could have earned________.

A. $510,000  

B. $440,000  

C. $280,000  

D. $160,000

2. Donna paid another $20,000 to the owner secretly because________.

A. she felt like offering 10% more

B. secret money made low price

C. the owner asked for the money

D. she was bored with bargaining

3. We can infer from Tim’s words in Paragraph 4 that________.

A. homebuyers feel hesitate facing rising house prices

B. buying a house is always a great opportunity

C. homebuyers never make the right decision

D. both sellers and buyers become desperate

4. Which of the following is TRUE about the housing bubble?

A. It is something everyone hates to see.

B. Only experts know when it will burst.

C. It is unavoidable in the regular circles.

D. It usually stays for about twenty years