[题目]田纳西河流域示意图.回答下列问题.(1)从农业分布来看.田纳西河流域是美国的带.长期高强度的种植造成 .(2)该地区在早期开发中.植被破坏严重.试分析其原因 .(3)在河流的开发利用中:图中A是河流发源地,其生态环境直接影响河流的和 .因此应保护好它的 ,图中B是流域开发重点部分.应注意水资源的和的保护,图中C是� 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】田纳西河流域示意图，回答下列问题。

（1）从农业分布来看，田纳西河流域是美国的______带，长期高强度的种植造成________。

（2）该地区在早期开发中，植被破坏严重，试分析其原因___________________________________________。

（3）在河流的开发利用中：图中A是河流发源地；其生态环境直接影响河流的________和________，因此应保护好它的________；图中B是流域开发重点部分，应注意水资源的________和________的保护；图中C是河谷平原，是人类活动比较集中的地区，因此是________保护的重点。

【答案】

（1）棉花土地退化

（2）流域内人口激增，毁林开荒扩大耕地面积；获取炼铜用的木炭；矿山开采破坏地表植被。

（3）水量水质植被合理分配水质生态环境

【解析】

试题分析：

（1）结合美国农业带的分布，图示田纳西河流域的农业带为棉花带，长期高强度的种植，会造成地表被冲蚀严重，土壤肥力下降，最终导致土地退化。

（2）田纳西河流域早期开发出现的生态环境问题是土地退化、植被破坏、环境污染；这些问题主要是由于人口过快增长，大量毁林开荒，开采矿产破坏地表植被导致土地退化、植被破坏；

（3）图中A地处河流上游，应加强植被保护；B是河流流域开发的主体，应注意水体的水质保护及合理分配；C是河谷平原，是人类活动的集中地区，应注意生态环境的保护。

练习册系列答案

相关题目

Technological change is everywhere and affects every aspect of life, mostly for the better. However, social changes are brought about by new technology are often mistaken for a change in attitudes. An example at hand is the involvement of parents in the lives of their children who are attending college. Surveys (调查) on this topic suggests that parents today continue to be “very” or “somewhat” overly-protective even after their children move into college dormitories. The same surveys also indicate that the rate of parental involvement is greater today than it was a generation ago. This is usually interpreted as a sign that today’s parents are trying to manage their children’s lives past the point where this behavior is appropriate.

However, greater parental involvement does not necessarily indicate that parents are failing to let go of their “adult” children.

In the context (背景) of this discussion, it seems valuable to first find out the cause of change in the case of parents’ involvement with their grown children. If parents of earlier generations had wanted to be in touch with their college-age children frequently, would this have been possible? Probably not. On the other hand, does the possibility of frequent communication today mean that the urge to do so wasn’t present a generation ago? Many studies show that older parents - today’s grandparents - would have called their children more often if the means and cost of doing so had not been a barrier.

Furthermore, studies show that finances are the most frequent subject of communication between parents and their college children. The fact that college students are financially dependent on their parents is nothing new; nor are requests for more money to be sent from home. This phenomenon is neither good nor bad; it is a fact of college life, today and in the past.

Thanks to the advanced technology, we live in an age of bettered communication. This has many implications well beyondthe role that parents seem to play in the lives of their children who have left for college. But it is useful to bear in mind that all such changes come from the technology and not some imagined desire by parents to keep their children under their wings.

【1】The surveys inform us of ______.

A. the development of technology

B. the changes of adult children’s behavior

C. the parents’ over-protection of their college children

D. the means and expenses of students’ communication

【2】The writer believes that ______.

A. parents today are more protective than those in the past

B. the disadvantages of new technology outweigh itsadvantages

C. technology explains greater parental involvement with theirchildren

D. parents’ changed attitudes lead to college children’s delayedindependence

【3】What is the best title for the passage?

A. Technology or Attitude

B. Dependence or Independence

C. Family Influence or Social Changes

D. College Management or Communication Advancement

【4】Which of the following shows the development of ideas in this passage?

【题目】读我国南方某地等高线地形图，分析回答下列问题。

【1】图中陡崖M的相对高度最有可能是(　　)

A．50米 B．90米

C．155米 D．220米

【2】如陡崖M在甲村正南方，则可知乙村旁的河流大致流向是(　　)

A．由东南向西北 B．由东北向西南

C．由西南向东北 D．由西北向东南

【3】在N点(　　)

A．能同时观察到甲、乙两村

B．能看到乙村，无法看到甲村

C．能看到甲村，无法看到乙村

D．两村都无法看到

【题目】--- I’11 tell Mary about her new job tomorrow.

--- You her last week.

A. ought to tell

B. would have told

C. must tell

D. should have told

【题目】书面表达

仔细观察右图，根据所看到的图片，描述其所表达的内容，并发表你的感想。

注意：词数100左右。

________________________________________________________________________________________

【题目】短文改错

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1．每处错误及其修改均仅限一词；

2．只允许修改10处，多者(从第11处起)不计分。

In recent years, ads are playing important part in our daily life.No matter where we go, you can find them. Some ads told us about new products, and some ads deal with widespread social concerns, such as, “Yes to life, no to drugs” and “Knowledge change life.” All of these ads are of greatly help to us, and we can learn a lot by follow the advice they give us. Unfortunately, some ads are not true, they either spread false information or cheat consumer in one way or another. However, in spite of the fact that ads can help with us, we should also watch out for them from time to time.

【题目】下图为“到达地球太阳辐射量的分布图”，图中曲线分别表示地表吸收太阳辐射量、地表反射太阳辐射量、大气上界太阳辐射量、云层反射太阳辐射量。读图回答下列问题。

【1】图中曲线中（）

A．①表示大气上界的太阳辐射量

B．②表示云层反射的太阳辐射量

C．③表示地表反射的太阳辐射量

D．④表示地表吸收的太阳辐射量

【2】影响③曲线变化的主要因素为（）

A．地势高低 B．云量厚度

C．正午太阳高度 D．植被状况

【3】近50年来，④曲线在高纬度的数值有减少的趋势，其主要原因是（）

A．气候变暖 B．云量增加 C．环境污染 D．人口增加

【题目】阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

There is a woman____【1】____( name) Tao Porchon-Lynch ,__ 【2】_____ was born in India in 1918. So, if you do the math ... she's 97. And at 97 , she has been recognized as the world's __【3】____(old) yoga teacher. She has been teaching yoga, full-time since 1967. Tao Porchon-Lynch __【4】__ ( teach) yoga to hundreds in Times Square, NYC in 2013. At the time this photo__【5】____ (take) when she was 【6】 , that's not all she's done .She's also been a model, actress and dancer. And she is a firm believer in positive thinking.

Tao not only talks the talk, she walks the walk. Or rather dances the dance. 【7】 age 85 she not only learned how_【8】__ (dance), she won dance _ 【9】___(compete). And she offers this advice to the young. "Don't put off tomorrow _ 【10】___you can do today."

So, what about retirement? At 97, she is well past the age when many people make retirement plans. Retiring, it turns out, is not Tao's style.

【题目】在含有1mol FeSO4的溶液中投入一小块金属钠，反应完全后，滤出沉淀并洗涤，然后在空气中灼烧沉淀得到的固体物质是( )

A. Fe B. FeO C. Fe(OH)3 D. Fe2O3

试题分类