Which word can be used to describe the man?A....

Which word can be used to describe the man?

A. Poor.　　 B. Humorous.　　 C. Forgetful.

高二英语短对话简单题查看答案及解析

Nuclear power's(核能的) danger to health, safety, and even life itself can be described in one word: radiation(辐射).

Nuclear radiation has a certain mystery about it, partly because it cannot be detected (探测) by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can't detect them, sense them, without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.

At very high levels, radiation can kill an animal or human being outright by killing masses of cells (细胞) in important organs (器官). But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells are hit, and if they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years.

This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated(放射治疗) and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents.

Radiation can hurt us. We must know the truth.

1.According to the passage, the danger of nuclear power lies in ________.

A. nuclear mystery                B. radiation detection

C. radiation level                D. nuclear radiation

2.Radiation can lead to serious results even at the lowest level ________.

A. when it kills few cells

B. if it damages few cells

C. though the damaged cells can repair themselves

D. unless the damaged cells can reproduce themselves

3.Radiation can hurt us in the way that it can ________.

A. kill large numbers of cells in main organs so as to cause death immediately

B. damage cells which may grow into cancer years later

C. affect the healthy growth of our younger generation

D. lead to all of the above results

4.Which of the following can be best inferred from the passage?

A. The importance of protection from radiation cannot be overemphasized (过分强调).

B. The mystery about radiation remains unsolved.

C. Cancer is mainly caused by radiation.

D. Radiation can hurt those who do not know about its danger.

高二英语阅读理解中等难度题查看答案及解析

Nuclear power's(核能的) danger to health, safety, and even life itself can be described in one word; radiation(辐射). Nuclear radiation has a certain mystery about it, partly because it cannot be detected (探测) by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can't detect them, sense them, without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. At very high levels, radiation can kill an animal or human being completely by killing masses of cells (细胞) in important organs (器官). But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells are hit, and if they are killed completely. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years.

This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated(放射治疗) and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents. Radiation can hurt us. We must know the truth.

1.According to the passage, the danger of nuclear power lies in __________.

A. nuclear mystery 　　　　 B. radiation detection

C. radiation level 　　　　 D. nuclear radiation

2.Radiation can lead to serious results even at the lowest level ________.

A. when it kills few cells

B. though the damaged cells can repair themselves

C. if it damages few cells

D. unless the damaged cells can reproduce themselves

3.Radiation can hurt us in the way that it can _____.

A. kill large numbers of cells in main organs so as to cause death immediately

B. damage cells which may grow into cancer years later

C. affect the healthy growth of our younger generation

D. lead to all of the above results

4.Which of the following can be best inferred from the passage?

A. The importance of protection from radiation cannot be too overemphasized (过分强调).

B. The mystery about radiation remains unsolved.

C. Cancer is mainly caused by radiation.

D. Radiation can hurt those who do not know about its danger.

高二英语阅读理解中等难度题查看答案及解析

Nuclear power's(核能的) danger to health, safety, and even life itself can be described in one word; radiation(辐射). Nuclear radiation has a certain mystery about it, partly because it cannot be detected (探测) by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can't detect them, sense them, without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. At very high levels, radiation can kill an animal or human being completely by killing masses of cells (细胞) in important organs (器官). But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells are hit, and if they are killed completely. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years.

This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated(放射治疗) and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents. Radiation can hurt us. We must know the truth.

1.According to the passage, the danger of nuclear power lies in __________.

A. nuclear mystery 　　　　 B. radiation detection

C. radiation level 　　　　 D. nuclear radiation

2.Radiation can lead to serious results even at the lowest level ________.

A. when it kills few cells

B. though the damaged cells can repair themselves

C. if it damages few cells

D. unless the damaged cells can reproduce themselves

3.Radiation can hurt us in the way that it can _____.

A. kill large numbers of cells in main organs so as to cause death immediately

B. damage cells which may grow into cancer years later

C. affect the healthy growth of our younger generation

D. lead to all of the above results

4.Which of the following can be best inferred from the passage?

A. The importance of protection from radiation cannot be overemphasized (过分强调).

B. The mystery about radiation remains unsolved.

C. Cancer is mainly caused by radiation.

D. Radiation can hurt those who do not know about its danger.

高二英语阅读理解中等难度题查看答案及解析

His English, ______ used to be very poor is now excellent.

A. which   B. that    C. it    D. whom

高二英语单项填空中等难度题查看答案及解析

At last the poor man had to give up. He found __________ no use begging for more.

A. it              B. this               C. that         D. himself

高二英语单项填空简单题查看答案及解析

Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

Back in the last century self-study used to mean trying to learn from books. Then as technology moved on, electric products __1.__ the way people learn a language. Audio cassettes enabled people to practice listening, video provided a vivid cultural environment of the languages, computers made interactivity possible, and the __2.__ of the Windows 95 operating system opened the door to full multimedia programs that could offer more than what the traditional materials could do.

Today technology has moved on ___3.__ . The Internet has served as a communication center. The general use of email has _4.__new opportunities for teachers to assist learning at a distance, which has an impact on __5.__ learning structures. As you can make more and more progress on your own, the role of the teacher is changing. Basic information and drill can be provided by computer; the teacher is then free to concentrate on the more important ___6.__: motivation and production of language in speech or writing.

The latest development is a direct email link from self-study CD-ROMs to an online teacher. Now you can get __7._ one-to-one tuition from any multimedia PC with an internet connection.

When you need more help you _8.__ email the tutor. The tutor will know which course you are following and your results to date so he is able to provide good, relevant advice. All you do is to buy the CD-ROM at normal price and then get additional _9.__ as you feel the need. So the self-study becomes distance learning with all its advantages of flexibility and low cost.

高二英语其他题中等难度题查看答案及解析

Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

You are watching a film in which two men are having a fight. They hit one another hard. At the start, they only __41__ with their fists. But soon they begin hitting one another over the heads with chairs. And so it goes on until one of the men crashes through a window and falls thirty feet to the ground below. He is dead! Of course he isn’t __42__ dead. With any luck he isn’t even hurt. Why? Because the men who fall out of high windows or jump from __43__ moving trains, who crash cars of even __44__ fire, are professionals. They do this for a living. These men are called __45__. That is to say, they perform tricks. There are two sides to their work. They actually do most of the things you see on the screen. For example, they fall from a high building. However, they do not __46__ on to hard ground but on to empty cardboard boxes covered with mattress(床垫). Again, when they hit one another with chairs, the chairs are made of soft wood and when they crash through windows, the glass is made of sugar! But although their work depends on trick of this sort, it also requires a high degree of skill and __47__. Often a stuntman’s success depends on careful timing. For example, when he is “blown up” in a battle scene, he has to jump out of the way of the explosion just at the right moment.

Naturally stuntmen are well paid for their work, but they lead dangerous lives. They often get __48__ injured and sometimes killed. A Norwegian stuntman, for example, skied over the edge of a cliff a thousand feet high. His parachute(降落伞) failed to open, and he was killed. In spite of all the risks, this is no longer a __49 __ for men only. Men no longer dress up as women when actresses have to perform some dangerous action. For nowadays there are stuntgirls, too.

高二英语其他题简单题查看答案及解析

Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

One-quarter of today’s student population are suffering from symptoms of depression. Of that group, almost half will experience depression intense enough to call for __43___ help. But many reject that idea, because they don’t want people to think there is something wrong with them.

There are three reasons why today’s college students are suffering more than in earlier ____44___. First is a weaker family support structure. Today, with high divorce rates and many parents __45___ their own psychological difficulties, the traditional family is not always available for help.

Another problem is __46_____ pressure. In the past ten years education costs have risen about 66 percent at public colleges and 90 percent at private schools. __47_____, most students must work part-time.

A final cause of students’ depression is the large __48_____ of majors available. Because of the difficulty of ___49___ a major, college can prove a time of great indecision. Many students ___50____ majors. As a result, it is becoming common for them to take five or six years to get a degree. It can be disappointing to students to be faced with the __51____ costs.

高二英语填空题简单题查看答案及解析

Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

A. roots      B. but     C. covered     D. reproduce   E. energy

F. probably  G. gaining  H. surrounding  I. supplied     J. life

Life on land probably began about 430 million years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first 1on land, we 2think of strange animals coming out of the oceans, but, in fact, no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They 3the first land animals with the 4and food necessary, since they ---the plants are the only form of life that is able to get and store 5.

The first plants to exist out of the water were probably certain kinds of algae （ 藻类 ）which were followed by other plants that grew close to the ground and needed water in which to6. Once the move to land has been made, however, evolution took place quickly. By the end of 100 million years, plants had developed their 7, and some have got tree-like forms since height was very important in 8   sunlight. About 300 million years ago, much of the world was 9with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.

高二英语其他题中等难度题查看答案及解析