AlanIzharBodner,anIsraeliinven

更新 2022-09-03
科目英语
题型阅读理解
难度中等
浏览 362

Alan Izhar-Bodner, an Israeli inventor, has developed a swimming suit for divers to breathe underwater without carrying heavy oxygen tanks. His suit makes use of the air that is dissolved（溶解）in water, just like fish do.
The system uses the Henry Law which states that the amount of gas that can be dissolved in a liquid is proportional (成比例的)to the pressure on the liquid. Raise the pressure ---more gas can be dissolved in the liquid. Decrease the pressure --- less gas dissolved in the liquid releases the gas. This is exactly what happens when you open a can of soda; carbon dioxide gas is dissolved in the liquid and is under pressure in the can. Open the can, releasing the pressure, and the gas fizzes(嘶撕作响)out.
Bodner's System obviously uses a special machine to lower pressure in part of a small amount of seawater taken into the system; dissolved gas is taken out. The patent（专利）reads: A self-contained open-circuit（循环）breathing instrument for use within a body of water naturally containing dissolved air. The instrument is adapted to provide breathable(可吸入的)air. The instrument contains an inlet for taking out a quantity of water from the body of water. It further contains a separator for separating the dissolved air from the quantity of water, thus gaining the breathable air. The instrument further contains an outlet for expelling (驱逐)the separated water back into the body of water, and another outlet for removing the breathable air and supplying it for breathing. The air is supplied so as to enable it to be expelled back into the body of water after it has been breathed .
Human beings have been thinking about how to breathe underwater since they started swimming. This long-held desire plays an important part in one of the first great science fiction novels, Jules Verne's 20,000 Leagues Under the Sea.
It can be inferred from the passage that____________ .

A．the less pressure it is, the less carbon dioxide gas is dissolved in the liquid

B．the deeper one dives into the ocean, the less gas is dissolved in the water

C．the greater pressure it is, the more carbon dioxide gas is dissolved in the liquid

D．the deeper one dives into the ocean, the more gas is dissolved in the water

This passage is mainly about __________.

A．how Bodner invented the instrument for breathing underwater

B．why Bodner invented the instrument for breathing underwater

C．how Bodner's instrument for breathing underwater works

D．how Bodner's instrument is used by divers for breathing underwater

From the passage we learn that __________.

A．a separator is used to expel breathable air back into the body of water

B．a separator is used to separate the air from the water so as to make use of the water

C．The breathable air removed from an outlet will eventually go back to the body of water.

D．The breathable air removed from an outlet will immediately go back to the body of water.

登录免费查看答案和解析

相关试题

.
第三部分：阅读理解（共20小题，每小题2分，满分40分）
阅读下列短文，从每题所给的四个选项（A, B, C和D）中，选出最佳选项。
During an exhibition show the skills of disabled people, an armless man used his mouth and feet to repair a watch. He completed the task in just a few minutes at the show, which was held in Beijing last Saturday. Just imagine the tiny parts that make up a watch. You have to wonder how the disabled man developed such a skill.
It was reported that 28-year-old Wang Jianghai lost his arms in an accident when he was five and began learning to repair watches at the age of 17. He has repaired more than 10,000 watches in the past 11 years.
What strong self-confidence he must have to overcome the difficulties in getting this skill! What optimism he must have to face the unfairness of his hard life! And what strong determination he must have to go through the hardship in his struggle for a normal life! Such confidence, optimism and willpower are exactly the qualities many physically healthy people lack nowadays. Wang has set a good example for young people.
But today's youth seem to be more interested with their TV stars and pop singers but less interested in learning from the examples of working and studying hard to achieve higher goals. . That is undoubtedly the result of the influence of a changing social atmosphere. One must admit that there is a trend towards hedonism in our society. People are increasingly more concerned about material gains than about spiritual pursuits. While adults know they must work hard whatever way they choose to materialize the gains, the younger generation are more likely to seek ease and comforts of their senses.
This pleasure-seeking trend provides a huge market for the entertainment industry and the mass media. The media devote excessive too much coverage to anecdotes of pop and TV stars, which in turn fans wider and stronger enthusiasm for entertainment among the public, especially young people.
Ours is a developing country. Global competition in the growth of national strength presents a demand for China to be quicker in its development. We cannot afford to lose time. We need to make our economy more powerful. To meet this need, all of us should maintain our tradition of working hard and overcoming difficulties.
56. A particular mention made of Wang Jianghai’s story in the first two paragraphs _____.
A. serves as a description of the trend today
B. serves as an introduction to the discussion
C. shows a disagreement of views
D. show the popularity of the TV stars and pop singers
57. Which of the following is the reason for young people’s increasing interest in entertainment?
A. Young people are taught by adults to seek pleasure of senses.
B. Young people have given up our traditional value of hard working completely
C. Young people are not interested in learning from the examples of hard working at all.
D. Young people are far too much influenced by too much entertainment news in media.
58. The underlined word “hedonism” (paragraph 4) means “________”.
A. a material                                                 B. spiritual gains
C. thinking pleasure is the most important            D. amusement

题型：未知
难度：未知

收藏答案/解析

.
So you have been called for an interview-well done ? Your effort has been paid off . Now to get the job , you will fell better at the interview if you show an understanding of the nature of the organization .
Ask a member of family or a friend to act as the employer and to give you an unreal interview . Be as realistic as possible , answer the questions seriously . Afterwards discuss how it went .
Think about how the employer would prefer to see you look . Remember the majority of employers are over 30 .
It is not wise to rush out and buy new clothes which will be worn for the first time at the interview . You’ll feel more at ease (自在) in a familiar dress .
Carelessness in any of these could cost you the job . Arrive at least 15 minutes before time . This will give you a chance to have a look around , read the notice broad and get the feel of the place .
Being late at interviews produces a bad impression. The first impression the interviewer gets of you formed as you walk through the door , so take a couple of deep breaths .
Be ready to shake hands of the interviewer offers .
Don’t take a seat until asked . Then sit comfortably .
Make eye contact when you are greeted and again if you shake hands , and during questioning . Eye contact is a form of non-verbal(非语言的) greeting .
Remember the interviewer’s name and use it from time to time .
Be ready for the question “Is there anything you want to ask?” Before the interview you should get ready for two or three such questions. Look on these not just as a chance to get information but as a means to improve your prospects (前途)in the employer’s estimation(判断).
Asking can show knowledge and avoid mistakes even before you begin . You can check on these later , when the hope for job is offered .
And if you fail , look upon the interview as an experience in itself , learn from it .
We wish you good luck and good job hunting .
72．Before you go to see the employer , it is better for you to_____________ .
A．put on your newly-bought clothes
B．have you hair cut
C．buy some modern and beautiful ties , shoes . etc
D．find a dress which you’ve got used to
73．To make a good impression , it is important for yo_____________ .
A．to walk through the door quickly
B．not to see the interviewer’s eyes
C．to sit down in front of the interviewer
D．to remember the interviewer’s name and use it sometimes
74．The underlined word “eye contact” means_____________.
A．looking at each other for a long time
B．a kind of greeting without any words
C．shaking hands with the employer again and again
D．a way of getting a wonderful job
75．People usually do the following things before a job interview, which is the right order for doing them ?
a. Asking a friend to give you an unreal interview .
b. Understanding the nature of the organization .
c. Paying attention to your clothes .
d. Arriving at the place of the interview on time .
e. Getting some information from the advisers .
A．a, e, b, c, d B．d, c, b, a , e C．b, e, a , c, d D．e, d, a , b, c

题型：未知
难度：未知

收藏答案/解析

.
Edmund Halley was an English scientist who lived over 200 years ago . He studied the observations of comets (彗星) which other scientists had made . The orbit of one particular comet was a very difficult mathematical problem . He could not figure it out . Neither could other scientists who dealt with such problems .
However , Halley had a friend named Newton, who was a brilliant (有才华的) mathematician . Newton thought he had already worked out that problem , but he could not find the papers on which he had done it . He told Halley that the orbit of a comet had the shape of an ellipse (椭圆) .
Now Halley set to work .He figured out the orbits of some of the comets that had been observed by scientists . He made a surprising discovery . The comets that had appeared in the years 1531, 1607, and 1682 all had the same orbit . Yet their appearances had been 75 to 76 years apart (相隔).
This seemed very strange to Halley. The different comets followed the same orbit . The more Halley thought about it , the more he thought that there had not been three different comets , as people thought . He decided that they had simply seen the same comet three times .The comet had gone away and had come back again .
It was an astonishing idea ! Halley felt certain enough to make a prediction of what would happen in the future . He decided that this comet would appear in the year 1758. There were 53 years to go before Halley’s prediction could be tested .
In 1758 the comet appeared in the sky . Halley did not see it , for he had died some years before . Ever since then that comet has been called Halley’s comet , in his honor .
67．Edmund Halley figured out the orbit of _______________.
A．some different comets appearing several times
B．the same comet appearing at different times
C．three different comets appearing three times
D．several comets appearing at the same time
68．Halley made his discovery_______________.
A．by doing experiments
B．by means of his own careful observation
C．by using the work of other scientists
D．by chance
69．Halley made a surprising , but correct prediction in the year __________ .
A．1704          B．1705        C．1706      D．1707
70．This passage in general is about _______________.
A．Halley and other scientists     B．the orbit of a comet
C．Newton and Halley               D．Halley and his discovery
71．According to the passage , which of the flowing is NOT true ?
A．Newton figured out the orbit of the comet .
B．Halley figured out the orbit of the comet first .
C．Newton gave Halley some help .
D．Halley died before 1758.

题型：未知
难度：未知

收藏答案/解析

.
The journey to the moon had been the first step toward future exploration(探险) in space. The distance between the Moon and Earth is very short indeed when compared with the distances between Earth and the other planets. Mars, the nearest planet to Earth is millions of miles away. Traveling to the planets will be man’s next aim. Such travels will be more challenging than the trip to the moon and certainly more adventurous.
Recently, two American spaceships, Vikings 1 and 2, landed on Mars trying to discover whether that planet has any life on it. So far the signs of life on Mars has neither confirmed(确认) nor ruled out. Russians have discovered that the surface of Venus(金星) is so hot that it is almost certain that there is no life there. Also the atmosphere of Venus is extremely dense(稠) and the pressure is nearly a hundred times greater than that of the Earth’s atmosphere.
Scientists believe man may find planets which have the same conditions as those we have on Earth , but man should realize Earth will be his only home for a long time and begin to love and care for it.
63. According to the passage, traveling to the planets will be ________.
A. much easier and even more interesting B. far more exciting and dangerous
C. man’s final aim                    D. man’s first step
64. Which of the following is Not true?
A. Mars is nearer to the earth than the moon.
B. The moon is much nearer to the earth than Mars.
C. Of all the planets, Mars is the nearest to the earth.
D. All the planets are much farther to the earth.
65. From the passage, we can guess_____.
A. there is life on Mars
B. there is no life on Mars
C. the atmosphere of Mars is not so dense as that of Venus
D. scientists will have little hope to find the answers
66. Man can live on under the conditions of _______.
A. much too hot surface                   B. the same pressure as we get on earth
C. normal atmosphere as we have on earth     D. both B and C

题型：未知
难度：未知

收藏答案/解析

.
Damage to Ozone layer Gets Worse
In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer. The warning is: The sun’s summertime rays are more dangerous than once thought.
A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone (臭氧层) in the atmosphere, which protects humans from harmful levels of ultraviolet radiation（紫外线辐射）, will be thinner over the United States this summer. The thinner layer allows more ultraviolet rays from the sun to reach Earth. The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer.
Scientists first became concerned about the ozone layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter. The hole was caused by chemicals used in refrigerators and air conditioners. When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.
Concern about the protective ozone layer rose more recently when data(数据) from satellites and ground stations showed that ozone levels were dropping over areas other than Antarctica. Low ozone levels were recorded in the spring and summer over the United States and over other populated areas in the world.
Although many countries have already begun stopping the use of ozone destroying chemicals, the new findings are expected to advance the timetable for a total ban(禁止) of the chemicals.
59.   The scientists have observed the ozone layer_____.
A. since 1980             B. since last winter
C. for about 20 years       D. for about one year
60. The ozone layer in the atmosphere can _____.
A. do a lot of good to human beings in many ways.
B. protect humans from diseases caused by bad weather.
C. do a lot of harm to human beings in the summer-time.
D. protect humans from harmful levels of ultraviolet radiation.
61. Scientists first found that there was a hole in the ozone layer_____.
A. above Arctic during the winter in the mid-1980s
B. above Antarctica during the winter in the mid-1980s
C. over somewhere in the north of the equator in 1980
D. over the U.S.A in the summertime in the mid-1980s
62.   The damage to the ozone layer was caused by_____.
A. the changeable weather
B. ozone-destroying chemicals
C. chemicals from refrigerators
D. chemicals from air conditioners

题型：未知
难度：未知

收藏答案/解析

推荐套卷

热门套卷