题目
题型：不详难度：来源：
Whales are not fishes but mammals (哺乳动物). Their body temperature stays the same, and does not change with the temperature of their environment. They breathe air, so they have to come out of the water to get oxygen. Thus, they cannot afford to fall into a sleeping state for too long, since they need to be awake in order to breathe. It is thought that only half of their brains sleep at a time, so that whales are never completely asleep. Females give birth to the young. They have hair. Although they are not covered in hair or fur like many mammals, whales have some bristles (胡子), usually on their heads.
Whales are highly social animals with complex languages and intelligence. They communicate with each other using romantic sounds, called “whale songs”. Being so large and powerful, these sounds are also loud.
Whales are endangered as a result of whaling (捕鲸) from the eleventh century to the twentieth. It has attracted the attention of environmentalists and some measures (措施) have been taken to protect whales.
小题1:How many aspects show that whales are mammals?
| A．One. | B．Two. | C．Three. | D．Four. |
| A．whales can breathe in the water |
| B．if a whale sleeps too long, it will get drowned |
| C．in order to breathe, whales never sleep |
| D．whales give birth to the young on the land |
| A．By body language. | B．By speaking languages. |
| C．By making song-like sounds. | D．By giving off a smell. |
| A．Whales are cold-blooded mammals like fishes. |
| B．Whales are hunted for food by people. |
| C．Whales are very harmful to human beings. |
| D．Whales are in danger because of being killed by people. |
答案
小题1:D
小题2:B
小题3:C
小题4:D
解析
试题分析：本文介绍了鲸鱼的基本信息以及鲸鱼所面临的现状。
小题1:D 细节题。根据文章第二段Their body temperature stays the same和They breathe air,和Females give birth to the young.以及Although they are not covered in hair or fur like many mammals, whales have some bristles (胡子), usually on their heads.可知一共提及了4个原因说明鲸鱼是哺乳动物。故D正确。
小题2:B 推理题。根据第二段3,4行Thus, they cannot afford to fall into a sleeping state for too long, since they need to be awake in order to breathe.可知鲸鱼是不可能长时间睡觉的，因为他们需要氧气。不然会被淹死的。故B正确。
小题3:C 细节题。根据文章倒数第二段They communicate with each other using romantic sounds, called “whale songs”. Being so large and powerful, these sounds are also loud.可知鲸鱼是通过声音进行交流的。故C正确。
小题4:.D 细节题。根据文章最后一段第一句Whales are endangered as a result of whaling (捕鲸) from the eleventh century to the twentieth.可知鲸鱼的危险主要是因为捕杀。故D正确。
点评：本文介绍了鲸鱼的基本信息以及鲸鱼所面临的现状。本文考查细节题为主，细节题可以在文章中直接找到与答案有关的信息或是其变体。搜查信息在阅读中非常重要它包括理解作者在叙述某事时使用的具体事实、数据、图表等细节信息。在一篇短文里大部分篇幅都属于这类围绕主体展开的细节。做这类题一般采用寻读法即先读题，然后带着问题快速阅读短文，找出与问题有关的词语或句子，再对相关部分进行分析对比，找出答案。
核心考点
试题【Imagine when you are sailing an ocean for the first time, you see a big fish swi】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
What most of us looked at as waste was converted to a thing of utility by Prithwis Mukhopadlyay, a 14-year-old prodigy. This Bengali boy, nourished in the US, Lake Junior High in Woodbury, Minnesota, has come up with an idea to convert banana peels to biogas.(生物气).
It"s well known that almost any organic waste can be converted to biogas. But why biogas from banana peel has hit the news is because it produced five times as much biogas as manure(粪), a commonly used source for producing biogas, in the experiments Prithwis conducted.
He filled two airtight containers, one with manure and the other with banana peels. Then he mixed each content with water and connected them to empty jars via pipes to collect the gas produced. He placed a heater next to each jar and measured the gas collected for 60 days. His studies proved that banana peels produced five times more biogas than manure.
This project titled "Comparison analysis: Eco-friendly source of energy for the future," earned him a spot in Discovery Channel Young Scientist Challenge. This weekend, the young whiz is to showcase his research work along with 40 other finalists at Washington. "Initially, I thought of doing a project that would reduce global warming. Things changed after I visited a biogas plant in a village in India during my summer vacations. It was an amazing experience," Prithwis says.
小题1:Why could Prithwis"s finding receive the attention of the media?
| A．Because he is a prodigy. |
| B．Because he is of Bengali descent. |
| C．Because he used an extremely rare organic waste to produce biogas. |
| D．Because his research proved that banana peels can produce more biogas. |
A.Lake Junior High. B Discovery Channel.
C. India. D.His laboratory at home.
小题3:This article probably appeared in a _________ magazine.
| A．gourmet | B．science | C．computer | D．fashion |
The positive side of plastic bags
Grocery stores, shopping centres, and restaurants are not thrifty in using and giving out plastic bags because they cost no more than a cent each, while a paper bag costs four cents. Plastic bags are produced so cheaply and massively（大量地）that they are used by 80% of store owners. In addition, they are light and very easy to carry and store.
The production of plastic bags has increased greatly over the last 20 years and producers of plastic bags are making large profits. However, the negative side of plastic bags is becoming well-known. More people are now getting worried that the earth is becoming a victim of the plastic bag success story.
The negative side of plastic bags
While production and consumption（消费）of plastic bags is good for business, it is not so for our Mother Earth. They have resulted in an increase in the amount of litter found floating in water or in the streets where we live.
Plastic storage bags, after usage, usually go to landfills（垃圾填埋地）as trash bags. They make the oceans poison sea animals. They give off toxins（毒素）when burned. They simply pollute the ground, air and water.
That is the true cost of plastic bags, and it looks like it is more than a cent. These are very alarming concerns and proper action needs to be taken.
小题1:According to Paragraph 3, plastic bag producers ________.
| A．are now worried that the earth will become a victim of plastic bags |
| B．don’t think they have done enough to popularize plastic bags |
| C．have not realized the harm of plastic bags |
| D．have succeeded in popularizing the use of plastic bags |
| A．plastic bags harm the earth severely |
| B．most plastic bags are not made use of |
| C．the prices of plastic bags are reasonable |
| D．plastic bags are the leading polluter on the earth |
| A．How plastic bags are produced. |
| B．How plastic bags are used. |
| C．How to popularize the use of paper bags. |
| D．How to solve the problems caused by plastic bags. |
小题1:Which of the following best gives the main idea of the passage?
| A．Computer helps find the best program for mixing plants. |
| B．Computer helps produce more crops. |
| C．Computer helps protect against insects and diseases. |
| D．Computer helps grow different plants. |
| A．the kinds of crops to be planted together |
| B．the way for different crops to be mixed |
| C．both A and B |
| D．either A or B |
| A．whether we should grow cotton and tomato together |
| B．how we should plant cotton and tomato together |
| C．what will happen if we grow potato, instead of tomato, together with cotton |
| D．how we can grow rice in the tomato field |
| A．man power | B．seeds | C．time | D．land |
| A．Computers can tell farmers how many plants can grow together. |
| B．With the help of computers farmers don"t have to do a lot of work. |
| C．With the help of computers farmers can get better results. |
| D．The change of one plant may cause a change in production. |
Most people, and many animals, like eating it. However, the only way for them to get that honey is to find a wild bees" nest and take the honey from it. Often, these nests are high up in trees, and it is difficult to find them. In parts of Africa, though, people and animals looking for honey have a strange and unexpected helper - a little bird called a honey guide.
The honey guide does not actually like honey, but it does like the wax in the beehives (蜂房). The little bird cannot reach this wax, which is deep inside the bees" nest. So, when it finds a suitable nest, it looks for someone to help it. The honey guide gives a loud cry that attracts the attention of both passing animals and people. Once it has their attention, it flies through the forest, waiting from time to time for the curious animal or person as it leads them to the nest. When they finally arrive at the nest, the follower reaches in to get at the delicious honey as the bird patiently waits and watches. Some of the honey, and the wax, always fall to the ground, and this is when the honey guide takes its share.
Scientists do not know why the honey guide likes eating the wax, but it is very determined in its efforts to get it. The birds seem to be able to smell wax from a long distance away. They will quickly arrive whenever a beekeeper is taking honey from his beehives, and will even enter churches when beeswax candles are being lit.
小题1:Why is it difficult to find a wild bees" nest?
| A．It"s small in size. | B．It"s hard to recognize. |
| C．It"s covered with wax. | D．It"s hidden in trees. |
| A．A bee. | B．A honey seeker. | C．A bird. | D．A beekeeper. |
| A．it goes to church | B．it gets its food |
| C．it sings in the forest | D．it reaches into bees" nests |
| A．Wild Bees | B．Wax and Honey |
| C．Beekeeping in Africa | D．Honey-Lover"s Helper |
In Kenya, researchers found that elephants react differently to clothing worn by men of the Maasai and Kamba ethnic groups. Young Maasai men spear animals and thus pose a threat to elephants; Kamba men are mainly farmers and are not a danger to elephants.
In an experiment conducted by animal scientists, elephants were first presented with clean clothing or clothing that had been worn for five days by either a Maasai or a Kamba man. When the elephants detected(察觉)the smell of clothing worn by a Maasai man, they moved away from the smell faster and took longer to relax than when they detected the smells of either clothing worn by Kamba men or clothing that had not been worn at all.
Clothing color also plays a role, though in a different way. In the same study, when the elephants saw red clothing not worn before, they reacted angrily, as red is typically worn by Maasai men. Rather than running away as they did with the smell, the elephants acted aggressively toward the red clothing.
The researchers believe that the elephants’ emotional reactions are due to their different interpretations of the smells and the sights. Smelling a potential danger means that a threat is nearby and the best thing to do is run away and hide. Seeing a potential threat without its smell means that risk is low. Therefore, instead of showing fear and running away, the elephants express their anger and become aggressive.
小题1:According to the passage, which of the following statements is TRUE about Kamba and Maasai people?
| A．Maasai people are a threat to elephants. |
| B．Kamba people raise elephants for farming. |
| C．Both Kamba and Maasai people are elephant hunters. |
| D．Both Kamba and Maasai people traditionally wear red clothing. |
| A．They attacked a man with the smell of new clothing. |
| B．They needed time to relax when smelling something unfamiliar. |
| C．They became anxious when they smelled Kamba-scented(有…气味的) clothing. |
| D．They were frightened and ran away when they smelled their enemies. |
| A．Elephants use sight and smell to detect danger. |
| B．Elephants attack people who wear red clothing. |
| C．Scientists are now able to control elephants’ emotions. |
| D．Some Kenyan tribes understand elephants’ emotions very well. |
| A．Elephants learn from their experience. |
| B．Elephants have sharper sense of smell than sight. |
| C．Elephants are more intelligent than other animals. |
| D．Elephants tend to attack rather than escape when in danger. |
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