A mixture of joy and anxiety me as I watched the rocket soaring upward into the deepuniverse. [ ]A. held B. caught C. settled D. measured 题目和参考答案——青夏教育精英家教网—

题目内容

A mixture of joy and anxiety ______ me as I watched the rocket soaring upward into the deep
universe.

[ ]

A. held
B. caught
C. settled
D. measured

练习册系列答案

相关题目

三.阅读理解(40分)
Americans have contributed to many art forms, but jazz, a type of music, is the only art form that was created in the United States. Jazz was created by black Americans. Many blacks were brought from Africa to America as slaves. The black slaves sang and played the music of their homeland.
Jazz is a mixture of many different kinds of music. It is a combination (合并) of the music of west Africa, the work songs the slaves sang, and religious music. Improvisation(即兴创作)is an important jazz. This means that the musicians make the music up as they go along, or create the music on the spot. This is why a jazz song might sound a little different each time it is played.
Jazz bands formed in the late nineteenth century. They played in bars and clubs in many towns and cities of the South, especially in New Orleans.
New Orleans is an imitational seaport, and people from all over the world come to New Orleans to hear jazz.
Jazz became more and more popular. By the 1920s, jazz was popular all over the United States. By the 1940s, you could hear jazz not only in clubs and bars, but in concert halls as well. Today, people from all over the world play jazz. Jazz musicians from the United States, Asia, Africa, South America, and Europe meet and share their music at festivals on every continent. In this way, jazz continues to grow and change.
1．From the passage we know that_____________created jazz.
A．white American     B．black Americans
C．West Africans       D．Indian Americans
2．What is the main idea of this passage?
A．It mainly tell about the contributions made by Americans to music.
B．It is mainly about different kinds of music.
C．It is about how jazz bands formed.
D．It is mainly about the history of jazz.
3．It can be known from the passage that jazz bands have a history of_________.
A．about 100 years       B．around 200 years
C．about 150 years       D．around 250 years
4．What kind of characteristics does jazz have?
A．It is always changing.
B．It is only played in the United States.
C．It is completely different from other music.
D．It is played in bars, clubs and concert halls.

Since the beginning of history, man has been attracted by the idea of living forever, of winning the fight against death and disease. So far, this has only remained a dream. Many people have wondered whether it would be possible to find a way to preserve human bodies, and what would be the best way.

It has long been known that meat of fruit can be kept fresh for long periods by freezing; in ancient China, for example, food was stored with ice to keep it fresh. This method could also be useful for preserving humans.

However, most living beings that exist under warm conditions die when frozen. This is because of the harmful effects of freezing ice crystals(晶体), which not only are larger than the volume(体积) of the water originally in the cells, but also form sharp cutting shapes that harm the cells.

In the 1940s Dr B.J. Luyet and a group of scientists in England were working on the problem of freezing cells without damaging them. Since the harm caused by ice crystals was the main cause of damage, Luyet suggested removing some or all of the water from the cells before freezing them.

Using living cells form chicken, Luyet and his assistants discovered that they could partly dry the chicken cells, using a mixture of the white part of an egg and glycerin (丙三醇). Some success was obtained. The chicken cells were dried, frozen for a period of time, and then carefully unfrozen. Almost all the cells recovered when they reached normal temperatures.

Since then, the cooling of whole animals to a temperature far below freezing point for later unfreezing has become more of a possibility, and the glycerin method would probably be used to accomplish this. When this can be done completely and successfully, science will have moved much closer to its aim of freezing and storing incurable patients until the day they can be cured.

1.What does the passage mainly talk about?

A．Easy but practical ways to remove water from living cells.

B．The possibility of preserving human bodies by freezing.

C．The practice of preserving food by freezing.

D．The harmful effects of freezing.

2.The idea of freezing human bodies to preserve them ______________.

A．has already been realized

B．was invented in ancient China

C．has its roots in the way of storing food

D．is widely accepted by the scientific world

3.According to the text, freezing _________________.

A．is harmful to living cells

B．is the best way of preserving food

C．reduces the volume of water in living cells

D．is a way of removing water from living cells

4.What can be inferred from the last paragraph?

A．It is impossible to have whole animals frozen.

B．It remains unknown how to unfreeze frozen animals.

C．Freezing incurable patients for later treatment is still an idea.

D．The glycerin method has already been adopted to treat patients.

Americans have contributed to many art forms, but jazz, a type music, is one of the art form that was started in the United States. Black Americans, who sang and played the music of their homeland, created jazz.

Jazz is a mixture of the music of Africa, the work songs the slaves sang, and religious(宗教) music. Improvisation is an important part of jazz. This means that the musicians make the music up as they go along, or create the music on the spot. This is why a jazz song might sound a little different each time it is played.

Jazz bands formed in the late 1800s. They played in bars and clubs in many towns and cities of the South, especially New Orleans. New Orleans is an international seaport, and people from all over the world come to New Orleans to hear jazz.

Jazz became more and more popular. By the 1920s, jazz was popular all over the United States. By the 1940s, you could hear jazz not only in clubs and bars, but in concert halls as well. Today, people from all over the world play jazz. Jazz musicians from the United　States, Asia, Africa, South America, and Europe meet and share their music at festivals on every continent. In this way jazz continues to grow and change.

1.What can be the best title of the passage?

A．American art forms. 　　　　　 B．The development of jazz.

C．The music of black Americans.　 D．The birthplace of jazz.

2.Which of the following is true?

A．Jazz is now popular all over the world.

B．Jazz is now a kind of religious music.

C．Jazz is now played only in bars and clubs.

D．Jazz is now played a little differently sometimes.

3.From the text it can be inferred that_________ .

A．New Orleans is the place where jazz was first produced

B．the American people are all jazz lovers

C．jazz is merely sung by the black when working

D．jazz may become more popular as time goes on

4.It took about ________ years to make jazz popular in the United States.

A．200 B．120 C．80 D．140

What will power your house in the future? Nuclear, wind, or solar power? According to scientists at the Massachusetts Institute of Technology (MIT) in the US, it might be leaves –but artificial ones.

Natural leaves are able to change sunlight and water into energy. It is known as photosynthesis (光合作用). Now researchers have found a way to imitate this seemingly simple process.

The artificial leaf developed by Daniel Nocera and his colleagues at MIT can be seen as a special silicon chip (硅片) with catalysts (催化剂). Similar to natural leaves, it can split water into hydrogen and oxygen when put into a bucket of water. The hydrogen and oxygen gases are then stored in a fuel cell (电池), which uses those two materials to produce electricity, located either on top of a house or beside the house.

Though the leaf is only about the shape of a poker card, scientists claimed that it is promising to be an inexpensive source of electricity in developing countries. “One can imagine villages in India and Africa not long from now purchasing an affordable basic power system based on this technology,” said Docera at a conference of the American Chemical Society.

An artificial leaf is not a new idea. The first artificial leaf was invented in 1997 but was too expensive and unstable for practical use. The new leaf, by contrast, is made of cheap materials, easy to use and highly stable. In laboratory studies, Nocera showed that an artificial leaf prorotype (原型) could operate continuously for at least 45 hours without a drop in activity.

The wonderful improvements come from Nocera’s recent discovery of several powerful new, inexpensive catalysts. These catalysts make the energy transformation (转换) inside the leaf more efficient with water and sunlight. Right now, the new leaf is about 10 times more efficient at carrying out photosynthesis than a natural one. Besides, the device can run in whatever water is available; that is, it doesn’t need pure water. This is important for some countries that don’t have access to pure water.

With the goal to “make each home its own power station” and “giving energy to the poor”, scientists believe that the new application could be widely used in developing countries, especially in India and rural China.

1.Which of the following order correctly shows how the artificial leaf is used to produce electricity?

a. artificial leaves split water into hydrogen and oxygen

b. the hydrogen and oxygen gases are stored in a fuel cell

c. the artificial leaves are put in water

d. the fuel cell uses hydrogen and oxygen to produce electricity

A. cbad B. cabd C. bcad D. cadb

2.Which of the following statements about new artificial leaves is TRUE according to the article?

A. They are inexpensive but unstable.

B. They are as efficient at carrying out photosynthesis as natural leaves.

C. They can work only in pure water.

D. They need several catalysts to help them work efficiently.

3.The aim of the scientists at MIT in developing the new artificial leaves is to .

A. build-up more power stations in the world

B. provide cheaper energy for developing countries

C. offer people in developing countries access to pure water

D. gain a deeper understanding of the photosynthesis process

4.What is the main point of the article?

A. Introduction to the history of artificial leaves.

B. An invention copying photosynthesis.

C. Giving energy to the poor.

D. A mixture of water power and solar energy.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。

November 30th, 2008

A few weeks ago, we talked about the Test of English as a Foreign Language, or TOEFL. A listener in Cambodia named Thida asks if American colleges and universities also accept the IELTS exam. IELTS is the International English Language Testing System. It was developed by University of Cambridge ESOL Examinations.

Cambridge University

Cambridge ESOL says the test measures true-to-life ability to municate in English for education, immigration or employment. The IELTS tests listening, reading, writing and speaking skills. It uses a mixture of accents and spellings, including British English and American English.

The test is used by government agencies, schools and professional organizations in one hundred twenty countries. ___1.___ Many American schools that accept the IELTS can be found on the Web at ielts.org.

___2.__. But the graduate school at Duke University in Durham, North Carolina, for example, says it prefers the IELTS.

The listening and speaking parts are the same for everyone who takes the IELTS. But people have a choice of reading and writing tests--- either academic or general training. The listening test takes thirty minutes. ____3._____ .

The reading test takes sixty minutes. Students answer forty questions based on three written passages.

The writing test also takes sixty minutes. Students have to write two essays. One essay has to be at least one hundred fifty words long and the other at least two hundred fifty words. ____4._____; the longer one has to support an argument.

____5.______.The score is based on a recorded talk between the student and a test examiner.

A. IELTS is a prehensive test of your English proficiency.

B. And, yes, that includes the United States.

C. The shorter one is a description of something.

D. Some schools accept both the TOEFL and the IELTS.

E. These language skills are increasingly demanded by international employers,

education institutions and professional associations.

F. There are forty questions based on a recording.

G. The speaking test takes less than fifteen minutes

试题分类