Bats are surprisingly long-lived creatures, s...

Bats are surprisingly long-lived creatures, some ______ a life span of around 20 years.

A. having　　 　　 B. had　　 　 C. have　　 　 D. to have

高三英语单项填空中等难度题查看答案及解析

Bats are surprisingly long-lived creatures, some _____ a life span of around 20 years.

A．having            B．had              C．have             D．to have

高三英语单项填空中等难度题查看答案及解析

(2011·浙江高考)Bats are surprisingly long­lived creatures, some______ a life span of around 20 years.

A．having　 　　　　　　　　　　　　 B．had

C．have　 　　　　　　　　　　　　　　 D．to have

高三英语单项填空中等难度题查看答案及解析

Bats are the only mammals that can fly a great distance, but they have another ability. Many bats live a very long time for an animal of their size. European researchers are studying bats to understand why they live so long. They hope to make discoveries aimed at fighting the aging process in human beings.

Last week, the group of scientists said they had discovered important biological qualities in some bat species.The group studied bat chromosomes(染色体). The scientists were most interested in structures connected to the ends of the chromosomes. They are called telomeres(端粒)，which shorten each time a cell divides. Scientists believe this shortening process causes cells to break down. They say this is what causes aging.

The European researchers studied 493 bats from four bat species. The group used information that had been gathered over more than 60 years. Of these animals, the greater mouse-eared bat generally lived an average of 37 years.The scientists said it had telomeres that did not shorten with age. Another Myotis bat holds the record for oldest age, reaching 41 years.The scientists’ findings suggest that these bats’ cells have the ability to maintain and repair their telomeres. This, they said, helps guard against the aging process.

Based on its body size, a bat like the greater mouse-eared bat would be expected to live four years. But, these mammals have been found to live nearly 10 times longer than that. The scientists found that only 19 species of mammals live longer than humans when their body size is considered. Eighteen of these are bats. The only exception is an unusual African rat.

1.What decides bats’ aging process according to the text?     .

A. The body size of the bat　　 B. The type of chromosomes

C. The building of cell　　 D. The length of telomeres

2.How long does a greater mouse-eared bat generally live?

A. 19 years.　　 B. 41 years.

C. 37 years.　　 D. 60 years.

3.We can learn from the text that  _________    .

A. nineteen kinds of bats could live longer than humans

B. the scientists have studied bats for more than six decades

C. the bats studied in the research are of the same species

D. researchers focus on finding out why humans live long

4.In which column of a magazine can you read the text?

A. Science　　 B. Lifestyle

C. Fashion　　 D. Business

高三英语阅读理解中等难度题查看答案及解析

Bats are the only mammals that can fly a great distance, but they have another ability. Many bats live a very long time for an animal of their size. European researchers are studying bats to understand why they live so long. They hope to make discoveries aimed at fighting the aging process in human beings.

Last week, the group of scientists said they had identified important biological qualities in some bat species. The group studied the bats’ chromosomes (染色体), a line of genes found in the nucleus of cells. The scientists were most interested in structures connected to the ends of the chromosomes. They are called telomeres (端粒), which protect the ends of chromosomes and shorten each time a cell divides. Scientists believe this shortening process causes cells to break down. They say this is what cause aging.

The European researchers studied 493 bats from four bat species. The group used information that had been gathered over more than 60 years. Of these animals, the greater mouse-eared bat generally lived the longest, an average of 37 years. The scientists said this and a related species, which are grouped together under the name Myotis, had telomeres that did not shorten with age. Another Myotis bat holds the record for the oldest age, reaching 41 years. The scientists’ findings suggest that these bats’ cells have the ability to maintain and repair their telomeres. This helps guard against the aging process.

Based on its body size, a bat like the greater mouse-eared bat would be expected to live four years. But, these mammals have been found to live nearly 10 times longer than that. The scientists found that only 19 species of mammals live longer than humans when their body size is considered. Eighteen of these are bats.

1.Why are European researchers studying bats?

A.To learn the similar habits between bats and human beings.

B.To find out why the greater mouse-eared bats live a long life.

C.To try to understand why bats prefer to fly during the night.

D.To discover a good way to prevent human beings from aging.

2.What does the second paragraph mainly explain to us?

A.The structures of the bats’ chromosomes. B.What causes aging biologically.

C.The functions of telomeres. D.What causes cells to break down.

3.Why do the greater mouse-eared bat and another Myotis bat live so long?

A.They are grouped together under the name Myotis.

B.Their telomeres are decreasing with age.

C.Their cells are able to keep up and fix their telomeres.

D.They have more telomeres than human beings do.

4.What can we infer from the last paragraph?

A.Bats live 10 times longer than other mammals.

B.Bats enjoy the longest life among mammals.

C.The greater mouse-eared bat and other bats should have lived longer.

D.Many bats live longer than human beings considering their body size.

高三英语阅读理解中等难度题查看答案及解析

Birds are the only animals with feathers, although some other animals, such as insects and bats, also have wings．Nearly all birds can fly, and even flightless birds, such as ostriches （鸵鸟）, penguins, evolved from flying ancestors．

Birds are found worldwide in many habitats．They can fly over some of the highest mountains on earth as well as both of the earth’s poles, dive through water to depths of more than 250m, and occupy habitats with the most extreme climates on the planet, including arctic tundra （冻土地带） and the Sahara Desert．Certain kinds of seabirds are commonly seen over the open ocean thousands of kilometers from the nearest land, but all birds must come ashore to raise their young．

Highly developed animals, birds are sensitive and responsive, colorful and graceful, with habits that excite interest and inquiry．People have long been fascinated by birds, in part because birds are found in the same habitats in which humans live．And like people, most species of birds are active during daylight hours．Humans find inspiration in birds’ capacity for flight and in their musical calls．Humans also find birds useful---their flesh and eggs for food, their feathers for warmth, and their companionship．Perhaps a key basis for our friendliness with birds is the similarity of our sensory worlds: Both birds and humans rely more heavily on hearing and color vision than on smell．Birds are useful indicators of the quality of the environment, because the health of bird populations mirrors the health of our environment．The rapid decline in birds populations and the accelerating extinction rates of birds in the world’s forests, grassland, wetlands, and islands are therefore reasons for great concern．

1.Which of the following would be the best title of the text?

A．Animals with Feathers and Wings

Our friendliness with birds

C．An introduction to Birds

D．Bird’s life

2.What does the second paragraph mainly tell us ?

A．Bird’s friendship              Bird’s habitats

C．Bird’s raising                 D．Bird’s environment

3.Which of following is NOT true according to the passage ?

A．Bird’s flying abilities and musical calls inspire humans greatly．

Birds live in the same surroundings in which humans live．

C．Both birds and humans rely more heavily on hearing and smell than on color vision．

D．Bird’s flesh and eggs for food, bird’s feathers for warmth, and their companionship are useful to us．

4.From the text it may imply but NOT state that __________．

A．the environment is being damaged seriously

if you want to raise birds, you should pay attention to environment

C．the environment affects the human beings

D．bird populations decrease rapidly

高三英语阅读理解中等难度题查看答案及解析

For a long time bats　 1.(be) one of the most feared creatures in the animal kingdom. Many pop culture associations with them are2.(relate) to vampire. Though these associations are　 complete misunderstandings, bats do have a dark side as a　 3.(danger) disease vector (传播媒介). So there is good reason to be exceptionally cautious if you come into contact with bats. However, the fact is4.bats play a significant role in keeping a balanced ecosystem.

Many organic farmers have learned about the benefits of　　 5.　 (have) bats nearby to help manage the amount of pests that show up without pesticides. One brown bat - about　　　　 6.size of a human thumb - can consume about 600 mosquitoes and other unwanted insects within an hour. They make for a fantastic, almost essential　 7.　 (add) to pest management on any farm.

Even large government organizations have realized the economic benefits of bats. The United States Geological Survey estimates that bat contributions8.pest management save the country at9. (little) 3.7 billion dollars per year. Without them, we would likely experience a dramatic drop in　 food production, which would eventually make10.(it) way into our weekly grocery bills.

高三英语语法填空简单题查看答案及解析

Bats are surprsingly long lived creatyures some  _______________a life span of around 20

A having   B had     C have     D To have

高三英语单项填空中等难度题查看答案及解析

Do you know some surprising innovations (创新) came from World War I? Here are some introductions to you.

1. Daylight Saving Time The idea of fiddling with (拨弄) the clock has been around since ancient times, but it was not until World War I that governments around the globe officially adopted daylight saving time. Why? To save resources such as fuel and extend the workday for the war effort. 1., and the Allies followed shortly after. To clear up confusion about the concept, the Washington Times used a comic strip to explain the first “spring forward” in the United States in 1918.

2. Blood Banks 2., but doctors rarely performed them before World War I, when they were accomplished by transfusing blood directly from one person to another. Captain Oswald Robertson, a U.S. Army Reserve doctor consulting with the British army, recognized the need to stock blood before casualties (伤亡) occurred. .

3. Hollywood With so much of Europe in the line of fire, the European film industry had to scale back (相应缩减) dramatically. 3.. Hollywood was still in its early stage, but its studios soon made fortunes producing wartime movies. The war itself provided material for countless movies in the 1920s and ’30s, including Wings, the winner of the first Academy Award for Best Picture.

4. Plastic Surgery 4.. British army surgeon Harold Gillies and his colleagues performed more than 11,000 operations, mostly on soldiers suffering from facial wounds from gunshots. 5..

There were other innovations made during World War I, such as wristwatches, modern passports, zippers, drones, etc.

A. The Germans did it first, in 1916

B. That opened the door for the Americans

C. Blood transfusions (输血) date back to the 1600s

D. Gillies’ operation became successful immediately

E. World War I left thousands of men scarred and maimed (伤残的)

F. Gillies became known as the father of modern plastic surgery

G.. After World War I the blood banks appeared in the United States.

高三英语七选五中等难度题查看答案及解析

阅读下面的短文，然后按照要求写一篇150左右的英语短文。

Here are some comments on Li Hua from his classmates.

Lily said, Li Hua is the smartest student in our class and scores the highest marks in the English and mathematics exams. His homework and assignments are always done to a very high standard so our teachers ask us to follow his example. We all admire his intelligence.

Kate said, Li Hua is really a hard-working student. He spends at least four hours every day reviewing his lessons and his homework is never late. As the exams get closer he becomes even more diligent and works into the early hours of the morning, making sure he has gone over all of the information covered in our classes.

John said, Li Hua is the kind of person who is easy to co-operate with. Although he’s very clever he is still willing to listen to others’ opinions and take their suggestions. When we do our groupwork in class we all want to be in his group because he always does his share of the work and is easy to get along with.

Tim said, Li Hua is the class monitor and the most helpful student in our class. He always makes sure the classroom is kept clean and assists the teachers in handing out and collecting the students’ books and homework. When a student is absent from school he will call and tell them what they have missed.

[写作内容]

假如你是李平，你的同学李华拟申请到美国某一大学学习。申请材料需包括同伴的推荐信。李华邀请你为他写一封推荐信。上文是其他同学对李华的一些评价，请根据这些评价和你自己对李华的看法，写一封推荐信。以下是信的内容 （ 信的开头和结尾已经为你写好 ）

以约30个词概括同学们眼中李华的特点和优点；

以约120个词表达你对李华的看法，并包括如下要点：

你对同学们评价意见的看法；

以你和李华之间的经历来说明其中的一点看法。

[写作要求]

1. 作文中可以使用亲身经历或虚构的故事，也可以参照阅读材料的内容，但不得直

接引用原文中的句子。

2.信中不能出现真实姓名和学校名称。

[评分标准]

概括准确，语言规范，内容合适，篇章连贯。

高三英语书面表达困难题查看答案及解析