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The elements other than hydrogen and helium exist in such small quantities that it is accurate to say that the universe is somewhat more than 25 percent helium by weight and somewhat less than 75 percent hydrogen. Astronomers have measured the abundance of helium throughout our galaxy and in other galaxies as well. Helium has been found in old stars, in relatively young ones, in interstellar gas, and in the distant objects known as quasars. Helium nuclei have also been found to be constituents of cosmic rays that fall on the earth (cosmic rays are not really a form of radiation; they consist of rapidly moving particles of numerous different kinds). It doesn’t seem to make very much difference where the helium is found. Its relative abundance never seems to vary much. In some places, there may be slightly more of it; in others, slightly less, but the ratio of helium to hydrogen nuclei always remains about the same. Helium is created in stars. In fact, nuclear reactions that convert hydrogen to helium are responsible for most of the energy that stars produce. However, the amount of helium that could have been produced in this manner can be calculated, and it turns out to be no more than a few percent. The universe has not existed long enough for this figure to be significant greater. Consequently, if the universe is somewhat more than 25 percent helium now, then it must have been about 25 percent helium at a time near the beginning. However, when the universe was less than one minute old, no helium could have existed. Calculations indicate that before this time temperature were too high and particles of matter were moving around much too rapidly. It was only after the one-minute point that helium could exist. By this time, the universe had cooled so sufficiently that neutrons and protons could stick together. But the nuclear reactions that led to the formations of helium went on for only relatively short time. By the time the universe was a few minutes old, helium production had effectively ceased.

Question: The word "they" refers to _____         

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:

The elements other than hydrogen and helium exist in such small quantities that it is accurate to say that the universe is somewhat more than 25 percent helium by weight and somewhat less than 75 percent hydrogen. Astronomers have measured the abundance of helium throughout our galaxy and in other galaxies as well. Helium has been found in old stars, in relatively young ones, in interstellar gas, and in the distant objects known as quasars. Helium nuclei have also been found to be constituents of cosmic rays that fall on the earth (cosmic rays are not really a form of radiation; they consist of rapidly moving particles of numerous different kinds). It doesn’t seem to make very much difference where the helium is found. Its relative abundance never seems to vary much. In some places, there may be slightly more of it; in others, slightly less, but the ratio of helium to hydrogen nuclei always remains about the same. Helium is created in stars. In fact, nuclear reactions that convert hydrogen to helium are responsible for most of the energy that stars produce. However, the amount of helium that could have been produced in this manner can be calculated, and it turns out to be no more than a few percent. The universe has not existed long enough for this figure to be significant greater. Consequently, if the universe is somewhat more than 25 percent helium now, then it must have been about 25 percent helium at a time near the beginning. However, when the universe was less than one minute old, no helium could have existed. Calculations indicate that before this time temperature were too high and particles of matter were moving around much too rapidly. It was only after the one-minute point that helium could exist. By this time, the universe had cooled so sufficiently that neutrons and protons could stick together. But the nuclear reactions that led to the formations of helium went on for only relatively short time. By the time the universe was a few minutes old, helium production had effectively ceased.

Question: Why does the author mention "cosmic rays"?         

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A little more than a hundred years ago, a number of European scholars began to record stories being told in peasant cottages and compile them into the first great collection of European folk tales. Written evidence exists to prove that the folk tales they recorded existed long before then thought. Collections of sermons from the 12th to the 15th century show that medieval preachers knew of some of the same stories as those recorded by the 19th century folklorists. The collections of folk tales made in the late 19th and early 20th centuries provide a rare opportunity to make contact with the illiterate masses who have disappeared into the pass without leaving a trace. To reject folk tales as historical evidence because they cannot be dated and situation with precision centuries. But to attempt to penetrate that world is to face a daunting set of obstacles, the greatest of which is the impossibility of listening in on the story tellers. No matter how accurate they may be the versions of the tales recorded in writing cannot convey the effects that the storytellers must have used to bring the stories to life: the dramatic pauses, the sly glances, the use of gestures to set scenes, and the use of sounds punctuate action. All of those devices shaped the meaning of the tales, and all of them elude the historian. He cannot be sure that the limp and lifeless text he holds between the covers of a book provides an accurate account of the performance that took place in earlier times.

Question: What do the collections of folk tales made in the late 19th and early 20th provide the historians?  

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Students at the age of 18 always have to face difficult decision to make: some want to go on with their study at college or university; others prefer to start work immediately. Many school leavers are eager to go to work in order to make money to live independently and help their parents. They always do their best to overcome any obstacles they may encounter. Unfortunately, owing to the guidance poor and bold from their parents and teachers, most boys and girls are ill - prepared for unemployment. Therefore, they often feel worried and build up all sort of fearsome prospects in their mind as the time to start work gets nearer. It is the duty of the school and family to prepare these young people for their future jobs.

Question 44: The word “duty” is nearest in meaning to_____         

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Students at the age of 18 always have to face difficult decision to make: some want to go on with their study at college or university; others prefer to start work immediately. Many school leavers are eager to go to work in order to make money to live independently and help their parents. They always do their best to overcome any obstacles they may encounter. Unfortunately, owing to the guidance poor and bold from their parents and teachers, most boys and girls are ill - prepared for unemployment. Therefore, they often feel worried and build up all sort of fearsome prospects in their mind as the time to start work gets nearer. It is the duty of the school and family to prepare these young people for their future jobs.

Question 45: Which of these following is NOT mentioned concerning young people starting work?           

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:

Students at the age of 18 always have to face difficult decision to make: some want to go on with their study at college or university; others prefer to start work immediately. Many school leavers are eager to go to work in order to make money to live independently and help their parents. They always do their best to overcome any obstacles they may encounter. Unfortunately, owing to the guidance poor and bold from their parents and teachers, most boys and girls are ill - prepared for unemployment. Therefore, they often feel worried and build up all sort of fearsome prospects in their mind as the time to start work gets nearer. It is the duty of the school and family to prepare these young people for their future jobs.

Question 41: The main idea of the passage is_____         

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:

Students at the age of 18 always have to face difficult decision to make: some want to go on with their study at college or university; others prefer to start work immediately. Many school leavers are eager to go to work in order to make money to live independently and help their parents. They always do their best to overcome any obstacles they may encounter. Unfortunately, owing to the guidance poor and bold from their parents and teachers, most boys and girls are ill - prepared for unemployment. Therefore, they often feel worried and build up all sort of fearsome prospects in their mind as the time to start work gets nearer. It is the duty of the school and family to prepare these young people for their future jobs.

Question 42: Why do you some young people want to find a job after they leave school?         

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions:

Students at the age of 18 always have to face difficult decision to make: some want to go on with their study at college or university; others prefer to start work immediately. Many school leavers are eager to go to work in order to make money to live independently and help their parents. They always do their best to overcome any obstacles they may encounter. Unfortunately, owing to the guidance poor and bold from their parents and teachers, most boys and girls are ill - prepared for unemployment. Therefore, they often feel worried and build up all sort of fearsome prospects in their mind as the time to start work gets nearer. It is the duty of the school and family to prepare these young people for their future jobs.

Question 43: What attitude do some young people have when they are faced with difficultly?         

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Smart cards and mobile phones are becoming an increasingly popular way to make all sorts of payments. Even now, in Japan thousands of transactions, from paying rail tickets to picking up the groceries, take place every day with customers passing their handsets across a small flat-screen device. And predictions in the world of finance reckon that payments using mobile phones will have risen to more than $50 billion in the very near future. What's the appeal of e-cash? Compared to cheques or credit cards, it offers the speed of cash, but more so. It takes just one tenth of a second to complete most transactions and as no change is required, errors in counting are eliminated. Fraud and theft are also reduced and for the retailer, it reduces the cost of handling money. Sony's vision of having a chip embedded in computers. TVs and games consoles means that films, music and games can be paid for easily and without having to input credit card details. And what about the future of the banks? Within their grip on the market, banks and credit-card firms want to be in a position to collect most of the fees from the users of mobile and contactless-payment systems. But the new system could prove to be a "disruptive technology" as far as the banks are concerned. If payments for a few coffees, a train ticket and a newspaper are made every day by a commuter with a mobile, this will not appear on their monthly credit card statements but on their mobile phone statements. And having spent fortunes on branding, credit-card companies and banks do not want to see other payment systems gaining popularity. It's too early to say whether banks will miss out and if so, by how much. However, quite a few American bankers are optimistic They feel there is reason to he suspicious of those who predict that high-street banks may be a thing of the past. They point out that Internet banking did not result in the closure of their high-street branches as was predicted. On the contrary, more Americans than ever are using local branches. So, whether we'll become a totally cash-free society remains open to contention.

Question: What is the main idea of the first paragraph?    

Read the following passage and mark the letter A,B,C or D on your answer sheet to indicate the correct answer to each of the questions

Smart cards and mobile phones are becoming an increasingly popular way to make all sorts of payments. Even now, in Japan thousands of transactions, from paying rail tickets to picking up the groceries, take place every day with customers passing their handsets across a small flat-screen device. And predictions in the world of finance reckon that payments using mobile phones will have risen to more than $50 billion in the very near future. What's the appeal of e-cash? Compared to cheques or credit cards, it offers the speed of cash, but more so. It takes just one tenth of a second to complete most transactions and as no change is required, errors in counting are eliminated. Fraud and theft are also reduced and for the retailer, it reduces the cost of handling money. Sony's vision of having a chip embedded in computers. TVs and games consoles means that films, music and games can be paid for easily and without having to input credit card details. And what about the future of the banks? Within their grip on the market, banks and credit-card firms want to be in a position to collect most of the fees from the users of mobile and contactless-payment systems. But the new system could prove to be a "disruptive technology" as far as the banks are concerned. If payments for a few coffees, a train ticket and a newspaper are made every day by a commuter with a mobile, this will not appear on their monthly credit card statements but on their mobile phone statements. And having spent fortunes on branding, credit-card companies and banks do not want to see other payment systems gaining popularity. It's too early to say whether banks will miss out and if so, by how much. However, quite a few American bankers are optimistic They feel there is reason to he suspicious of those who predict that high-street banks may be a thing of the past. They point out that Internet banking did not result in the closure of their high-street branches as was predicted. On the contrary, more Americans than ever are using local branches. So, whether we'll become a totally cash-free society remains open to contention.  

Question: Why does the author mention "a small flat-screen device" in the first paragraph?