*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet . When the fragments landed in the southern part of the giant planet, the explosions were watched by scientists here on earth. But what if our own planet was hit by a comet? The year is 2094. It has been announced that a comet is heading towards the Earth. Most of it will miss our planet, but two fragments will probably hit the southern part of the Earth. The news has caused panic. On 17 July, a fragment four kilometers wide enters the Earth's atmosphere with a huge explosion. About half of the fragment is destroyed. But the major part survives and hits the South Atlantic at 200 times the speed of sound. The sea boils and an enormous wave is created and spreads. The wall of water rushes towards southern Africa at 800 kilometres an hour. Cities on the African coast are totally destroyed and millions of people are drowned. The wave moves into the Indian Ocean and heads towards Asia. Millions of people are already dead in the southern part of the Earth, but the north won't escape for long. Tons of broken pieces are thrown into the atmosphere by the explosions. As the sun is hidden by clouds of dust, temperatures around the world fall to almost zero. Crops are ruined. Wars break out as countries fight for food. A year later civilization has collapsed. No more than 10 million people have survived. Could it really happen? In fact, it has already happened more than once in the history of the Earth. The dinosaurs were on the Earth for over 160 million years. Then 65 million years ago they suddenly disappeared. Many scientists believe that the Earth was hit by a space fragment. The dinosaurs couldn't survive in the cold climate that followed and they became extinct. Will we meet the same end? Question: 55.Which of the following is NOT TRUE according to the author's description of the disaster in 2094? Options: A: The whole world becomes extremely cold B: All the coastal cities in Africa are destroyed C: The visit of the comet results in wars D: The whole mankind becomes extinct
**Answer**
D

*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: How often one hears children wishing they were grown up, and the old wishing they were young again! Each age has its pleasure and its pains, and the happiest person is the one who enjoys what each age gives him without wasting any time in useless regrets. Children is a time when there are few duties to make life hard. If a child has good parents, he is fed, looked after, and loved whatever he may do. It's impossible for him to be given so much again in his life without having to do anything in return. Besides, life is always giving new things to the child. A child finds pleasure in playing in the rain, or in the snow. His first visit to the seaside makes him wild. But a child has his pains; he is not so free to do as he wishes. He is continually being told not to do this, not to do that, or being punished for what he has done wrong. His life is therefore not perfectly happy. When the young man starts to make his own living, he becomes free from the rules of school and parents; but at the time he is forced to accept duties. He can no longer expect others to pay for his food, his clothes and his room, but has to work for them if he wants to live comfortably. If he spends most of his time playing about in the way that he used to as a child, he will go hungry and suffer. And if he breaks the law of society as he used to break the laws of his parents, he may go to prison, lf, however, he works hard, keeps out of trouble, and has good health, he can have the great happiness of seeing himself make steady progress in his job and of building up his own position in society and enjoy success and good reputation.. Old age has always been thought of as the worst age to be, but it is not necessary for the old to be unhappy. Old age has its own happiness. They can have the joy of seeing their children making progress in life; they can watch their grandchildren growing up around them and, perhaps, best of all, they can, if their life has been a useful one, feel the happiness of having come through the battle of life safely... Question: "Enjoy what each age gives him without wasting time in useless regrets" means _ . Options: A: Enjoy what is given to him by people at his age, feeling regrets B: Enjoy himself at his own age, feeling regrets for a waste of time C: Make full use of the time he is given at his age instead of regretting having no achievements D: Enjoy his own age and look down on the people at other ages
**Answer**
C

*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: Scientists in Israel have discovered a new way to test for water pollution by "listening" to what the plants growing in water have to say. By shining a laser beam on the tiny pieces of _ floating in the water,the researchers said they hear sound waves that tell them the type and amount of contamination in the water. "It is a red light,telling us that something is beginning to go wrong with the quality of water," said Zvy Dubinsky,an aquatic biologist at Israel's Bar Ilan University."Algae is the first thing to be affected by a change in water quality.""The secret," he said,"is to measure the rate of photosynthesis in the algae,meaning the plant's ability to transform light into energy." During photosynthesis,plants also release oxygen into the air. Dubinsky's technique is easy to perform because of the overabundance of algae in the planet's water.Most of the oxygen in the atmosphere comes from algae.A prototype tester that occupies about one square meter of a laboratory desktop,shoots a laser beam at water samples to stimulate photosynthesis in the algae.But not all of the laser's heat is used.Depending on the condition of the algae and the rate of photosynthesis,some of the heat is shot back into the water,creating sound waves,Dubinsky said.With a special underwater microphone,researchers are able to analyze the strength of the sound waves and determine the health of the algae and the condition of the surrounding water. "Algae suffering from lead poisoning,like waste discharged from battery and paint manufacturing plants,will produce a different sound than those suffering from lack of iron or exposure to other toxins," said researcher Yulia Pinchasov.She said that testing algae photosynthesis can determine water quality more accurately and easily than laborintensive methods now used like chemical and radioactive carbon testing. Question: Why is the algae tested? Options: A: Because it floats on the water. B: Because it can have photosynthesis. C: Because it is the first to be polluted. D: Because it can produce different sounds.
**Answer**
C