阅读材料，回答题。_简答题试题答案

第1题

阅读材料，回答题。All the useful energy at the surface of the earth comes fromthe activity o

阅读材料，回答题。

All the useful energy at the surface of the earth comes fromthe activity of the sun. The sun heats and feeds creatures and mankind. Eachyear it provides men with two hundred million tons of grain and nearly tenmillion tons of wood, coal, oil, natural gas, and all other fuels are stored energyfrom the sun. Some was collected by this season’s plants as carbon compounds.Some was stored by plants and trees ages ago. Even waterpower derives from thesun. Water turned into vapor by the sun fails as rain. It courses down themountains and is converted to electric power. Light transmits only the energythat comes from the sun’s outer layer, and much of this energy that is directedtowards the earth never arrives. About nine tenths of it is absorbed by theatmosphere of the earth. In fact, the earth itself gets only one half millionthof the sun&39;s entire output of radiant energy.

The sun is the source of all of the following EXCEPT ________ 查看材料

A.gasoline

B.natural gas

C.atomic power

D.animal fat

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第2题

阅读下文，回答题Trees are useful to man in three important ways: they provide him with wood

阅读下文，回答题

Trees are useful to man in three important ways: they provide him with wood and other prod-ucts; they give him shade; and they help to prevent droughts and floods.

Unfortunately, in many parts of the world, man has not realized that the third of these services is the most important. (78)In his eagerness to make money from trees, he has cut them down in large numbers, only to find that without ,them he has lost the best friends he had. And besides, he is usually too careless to plant and look after new trees. So the forests slowly disappear.

This does not only mean that man will have fewer trees. The results are even more serious:for where there are trees, their roots break up soil--allowing the rain to sink in--and also bind the soil, thus preventing it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing remains but worthless desert.

Two thousand years ago a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It set up the empire but, without its trees, its soil became poor and it grew weak. When the empire fell to pieces, the home country found itself faced with floods and starvation.

What is the most important service of trees to man according to the passage？查看材料

A.They help him make money

B.They give him wood and other products

C.They help him prevent droughts and floods

D.They give him shade

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第3题

阅读材料，回答题。England is not a big country: from north to south and from east to west it

阅读材料，回答题。

England is not a big country: from north to south and from east to west it is only about three hundred miles across. But for a small country it has a surprising range of climate. People who have never visited England, or who have visited only one part of it, often make the mistake of thinking that it is a cold and wet country. Except for the summer months of June to September, this is probably tree of the north of England and the Midlands. In the south, however, the climate is much more pleasant. One result is that when people retire from a job in the north they often prefer to move down to the milder south.

Perhaps the warmest part of the country is the southwest, which consists of the counties of Devon and Cornwall. The warm Gulf Stream flows across the North Atlantic Ocean from the Gulf of Mexico and makes the coastal regions of the southwest quite warm. Palm trees, bamboo (竹)and many semitropical (亚热带的 ) plants grow well in the southwest of England. Flowers and vegetables ripen(成熟 as much as a month earlier than those elsewhere. Farmers in the area obtain a higher price for their vegetables and flowers because they are ready earlier. In winter there maybe several feet of snow in other parts of England but there will probably be no snow at all in the southwest. This may be one of the reasons why the southwest is one of England’s most popular holiday areas.

The distance from the centre of England to the south coast is about__________. 查看材料

A.one hundred miles

B.three hundred miles

C.one hundred and fifty miles

D.six hundred miles

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第4题

根据下面内容，回答题： Los Angeles has planted 2，000 rubber trees down the middle of one of

根据下面内容，回答题：

Los Angeles has planted 2，000 rubber trees down the middle of one of its main streets．These trees do not 21 rubber．They are，22， made of rubber．Mr．Joe Dynamo， a spokesman for Los Angeles 23 council， explained the reasons．He said:

"These 24 are representative of our virtual society．We have polystyrene grass on our golf 25．We have non-milk powder 26 our coffee．We 27 copies in plastic of old wooden furniture．We have fiberglass tombstones.28 shouldn"t we have trees made of rubber？"

"At 50 miles an hour，29 motorist will see any difference．And our preservation 30 will be lower．You give the trees an annual rinse with detergent， and 31 them off twice a year．We 32 a lot of money because transplanting， pruning， weeding and leaf-collection are all 33 And we have a 60-year 34 guarantee on each plant．This is rationalization at 35 best， "

材料题请点击右侧查看材料问题查看材料

A.invent

B.do

C.produce

D.create

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第5题

阅读材料，回答题。We all know that DNA has the ability to identify individuals but, because

阅读材料，回答题。

We all know that DNA has the ability to identify individuals but, because it is inherited, there are also regions of the DNA strand which can relate an individual to his or her family (immediate and extended), tribal group and even an entire population. Molecular Genealogy(宗谱学) can use this unique identification provided by the genetic markers to link people together into family trees. Pedigrees(家谱) based on such genetic markers can mean a breakthrough for family trees where information is incomplete or missing due to adoption, illegitimacy or lack of records. There are many communities and populations which have lost precious records due to tragic events such as the fire in the Irish courts during Civil War in 1921 or American slaves for whom many records were never kept in the first place.

The main objective of the Molecular Genealogy Research Group is to build a database containing over 100,000 DNA samples from individuals all over the world. These individuals will have provided a pedigree chart of at least four generations and a small blood sample. Once the database has enough samples to represent the world genetic make-up, it will eventually help in solving many issues regarding genealogies that could not be done by relying only on traditional written records. Theoretically, any individual will someday be able to trace his or her family origins through this database.

In the meantime, as the database is being created, molecular genealogy can already verify possible or suspected relationships between individuals. "For example, if two men sharing the same last name believe that they are related, but no written record proves this relationship, we can verify this possibility by collecting a sample of DNA from both and looking for common markers(in this case we can look primarily at the Y chromosome(染色体）) ," explains Ugo Perego a member of the BYU Molecular Genealogy research team.

People in a large area may possess the same DNA thread because __________. 查看材料

A.DNA is characteristic of a region

B.they are beyond doubt of common ancestry

C.DNA strand has the ability to identify individuals

D.their unique identification can be provided via DNA

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第6题

回答题。Spring has came to Portland at last．The sky is blue．76．__________ Birds are singing

回答题。

Spring has came to Portland at last．The sky is blue．76．__________

Birds are singing on the trees, flowers are blooming, and77．__________

everyone are in a good mood．Spring has always been78．__________

a busy time for college students in Portland．They had79．__________

to take final examinations and hand out their term papers．80．__________

Most of students who have been living in the dorms 81．__________

will soon be packing their things to move back to home 82．__________

for summer vacation．of course, many students will be 83．__________

looking for job during the summer and other students will 84．__________

remain in campus to take courses．85．__________

第76题__________

查看材料

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第7题

阅读材料，回答题。The top of the world is a wonderland. In winter, the temperature often fai

阅读材料，回答题。

The top of the world is a wonderland. In winter, the temperature often fails to -30~F and the sun never rises. The ocean is surrounded by frozen ground. There are few people or trees, but to polar bears, the Arctic(北极) is home.

Polar bears have thick fur, big paws and other features that make them well prepared for life in their tough environment. In fact, they need the Arctic sea ice for survival. But climate change is causing larger and larger areas of summer sea ice to melt(融化). Experts say that if warming pat-terns continue, the Arctic could be free of summer sea ice by 2050. That may cause two-thirds of the word&39; s 20,000 polar bears to be gone by then too.

Polar bears can&39; t survive for long on land. Seals are their main source of food. The only place where polar bears can hunt seals is on the ice. Although these bears are strong swimmers, they are no match for lighming swift seals in the water. A polar bear has brilliantly clever strategies to overcome this disadvantage. In winter the bear waits motionless beside a seal&39; s breathing hole, which is a narrow tunnel through the ice. Often many hours pass before the seal comes up for air and the bear kills it with a powerful blow of its paw. In summer, the polar bears that live on land eat very little and wait for the sea ice to return.

With the sea ice forming later in the year and melting earlier, polar bears do not have enough opportunity to hunt and eat. Less sea ice makes it harder for the bears to catch the seals. The bears must swim longer distances between ice packs(大片浮冰), and they can&39; t always make it.. The ice is also getting thinner. These conditions can cause polar-bear cubs to become separated :from their mothers, who provide them with food.

Steven Amstrup is the chief scientist of Polar Bear International. The group aims to save the bears and their home. "The more people who see polar bears and understand their difficult situations, the better the chance we&39; 11 alter our warming path in time to save them," he says.

Which is the best title for the passage？查看材料

A.Climate Change in the Arctic

B.How to Protect the Environment

C.The Arctic Is Home to Polar Bears

D.Polar Bears in Danger

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第8题

阅读下面短文，回答题。垫底的人陈大超小说中的徐芳有着怎样的心理特征？请简

阅读下面短文，回答题。

垫底的人

陈大超

小说中的徐芳有着怎样的心理特征？请简要分析。（4分）

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第9题

阅读下面文字，回答题。弗洛伊德——心灵深处的哥伦布作者认为，弗洛伊德的科学研

阅读下面文字，回答题。

弗洛伊德——心灵深处的哥伦布

作者认为，弗洛伊德的科学研究是建立在坚实的思想基础之上的。这里的“思想基础”指什么？请简要概括。（4分）

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第10题

阅读材料回答题：教师在板书生字时，常把形近字的相同部分与相异部分分别用白色和红色的粉笔写出来。你是否赞成这种做法（）

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阅读材料，回答题。Trees are useful to man in three important ways: they provide him with woo