I'm taking a test and have to guess the right answer to the question after the article. Article: The temperature of the sun is over 5,000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degrees at the center. The sun is so much hotter than the earth that matter can exist only as a gas, except at the core. In the core of the sun, the pressures are so great against the gases that, despite the high temperature, there may be a small solid core. However, no one really knows, since the center of the sun can never be directly observed. Solar astronomers do know that the sun is divided into five layers or zones. Starting at the outside and going down into the sun, the zones are the corona, chromosphere, photosphere, convection zone and finally the core. The first three zones are regarded as the sun's atmosphere ends and the main body of the sun begins. The sun's outermost layer begins about 10,000 miles above the visible surface and goes outward for millions of miles. This is the only part of the sun that can be seen during an eclipse such as the one in February 1979. At any other time, the corona can be seen only when special instruments are used on cameras and telescopes to shut out the glare of the sun's rays. The corona is a brilliant, pearly white, filmy light, about as bright as the full moon. Its beautiful rays are a sensational sight during an eclipse. The corona's rays flash out in a brilliant fan that has wispy spikelike   rays near the sun's north and south poles. The corona is thickest at the sun's equator. The corona rays are made up of gases streaming outward at tremendous speeds and reaching a temperature of more than 2 million degrees Fahrenheit. The rays of gas thin out as they reach the space around the planets. By the time the sun's corona rays reach the earth, they are weak and invisible. Question: All of the following are parts of the sun's atmosphere EXCEPT the   _  . Options: A: corona B: chromospheres C: photosphere D: core
D
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I'm taking a test and have to guess the right answer to the question after the article. Article: Most of the time, the ground feels solid beneath our feet. That's comforting. But it's also misleading because there's actually a lot going on underground. Masses of land (called plates) slip, slide, and bump against each other, slowly changing the shape of continents and oceans over millions and billions of years. Scientists know that Earth formed about 4. 5 billion years ago.  They also know that our planet was hot at first. As it cooled, its outermost layer, called the crust  , eventually formed moving plates. Exactly when this shift happened, however, is an open question. Now, an international group of researchers has an answer. They've found new evidence suggesting that Earth's crust started shifting at least 3.8 billion years ago. The new estimate is l. 3 billion years earlier than previous ones. Not long before 3. 8 billion years ago,  lots of small planets were hitting Earth, keeping its crust in a hot, melting state. After the hard crust formed, much of it sank at various times into the planet's hot insides. There, it melted before returning to the surface. In some places, however, the crust never sank. One of the oldest such places is in Greenland, in an area called the Isua supracrustal   belt. The rocky crust there is between 3. 7 and 3. 8 billion years old. The belt was once part of the seafloor, but now it is exposed to air. The researchers recently took a close look at the Isua supracrustal belt. They noticed long, parallel cracks in the rock that have been filled in with a type of volcanic rock. To explain this structure, the scientists propose that tension in the crust caused the seafloor to crack open long ago. Hot, liquid rock oozed from deep inside Earth to fill the cracks. Finally, the whole area cooled, forming what we see today. That explanation, plus chemical clues inside the rock, suggests that the Isua supracrustal belt was once part of plate under the ocean, beginning around 3.8 billion years ago. "It's a fantastic case of solving a jigsaw puzzle ,"says one of the researchers. He... Question: The text is mainly about  _  . Options: A: why the Earth cooled B: how the Isua supracrustal belt formed C: whether the ground beneath our feet is still D: when Earth's crust began shifting
D
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I'm taking a test and have to guess the right answer to the question after the article. Article: China is the country with the largest population in the world. Too many people cause many problems such as food problem. And today, China's population is still growing very fast. So in order to control the population, China has formulated the policy of family planning, that is late marriage, late childbirth and having fewer but healthier children. Men of 22 years old and women of 20 years can get married. If a man of 25 or over 25 gets married with a wo-man of 23 or over 23 , their marriage is late marriage. Childbirth by a woman at the age of 23 or late is a late childbirth. The country encourages people to have only one child. Family planning is a useful policy to control China's population. And it is still needed in China in the following years. Question: Family planning is   _  in today's China. Options: A: not needed B: still needed C: not good D: useful
B
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I'm taking a test and have to guess the right answer to the question after the article. Article: Mr. Robinson had to travel somewhere on business and as he was in a hurry, he decided to go by air. He liked to sit beside a window when he was flying. So, when he got on to the plane, he looked for a window seat. He found all of them had already been taken except one. There was a soldier sitting in the seat beside this one and Mr. Robinson was happy that he had not taken the one by the window; but, anyhow, he at once went towards it. When he reached it, however, he saw there was a notice on it. It was written in ink and said "This seat is reserved for proper load balance. Thank you." Mr. Robinson had never seen such a notice in a plane before, but he thought that the plane must be carrying something heavy in its baggage room which made it necessary to have the passengers properly balanced, so he walked on and found another empty seat, not beside a window, to sit in. Then, when the plane was quite full, a very beautiful girl stepped into the plane. The soldier quickly took the notice off the seat beside him and in this way succeeded in having the girl beside him during the whole trip. Question: When he got on the plane he was happy to find that   _  . Options: A: a notice was put in a window seat B: some of the seats were not occupied C: there was a seat that he had hoped to have D: the plane was not very crowded
