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I'm taking a test and have to guess the right answer to the question after the article. Article: Many scientists today are convinced that life exists elsewhere in the universe---life probably much like that on our own planet. They reason in the following way. As far as astronomers can determine, the entire universe is built of the same matter. They have no reason to doubt that matter obeys the same laws in every part of the universe. Therefore, it is reasonable to guess that other stars, with their own planets, were born in the same way as our own solar system. What we know of life on earth suggests that life will arise wherever the proper conditions exist. Life requires the right amount and kind of atmosphere. This eliminates all those planets in the universe that are not about the same size and weight as the earth. A smaller planet would lose its atmosphere; a larger one would hold too much of it. Life also requires a steady supply of heat and light. This eliminates double stars, or stars that flare up suddenly. Only single stars that are steady sources of heat and light like our sun would qualify. Finally, life could evolve only if the planet is just the right distance from its sun. With a weaker sun than our own, the planet would have to be closer to it. With a stronger sun, it would have to be farther away. If we suppose that every star in the universe has a family of planets, then how many planets might support life? First, eliminate those stars that are not like our sun. Next eliminate most of their planets; they are either too far from or too close to their suns. Then eliminate all those planets which are not the same size and weight as the earth. Finally, remember that the proper conditions do not necessarily mean that life actually does exist on a planet. It may not have begun yet, or it may have already died out. This process of elimination seems to leave very few planets on which earthlike life might be found. However, even if life could exist on only one planet in a million, there are so many billions of planets that this would still leave a vast number on which life could exist. Question: The existence of life depends on all of the following factors EXCEPT _ . Options: A: the right amount of atmosphere B: our own solar system C: steady heat and light D: the right distance from the sun
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B

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I'm taking a test and have to guess the right answer to the question after the article. Article: A third of primary schoolchildren in China are suffering from psychological ill-health as a result of classroom stress and parental pressure, according to a study published on Tuesday. The problem is so bad that urgent measures are needed, warns the study, led by British and Chinese researchers. The investigation surveyed 2,191 pupils aged nine to 12 in nine schools in urban and rural Zhejiang, a ly prosperous coastal province in eastern China. Eighty-one percent of the youngsters said they worried "a lot" about exams, 63 percent feared being punished by their teacher, 44 percent had been physically bullied at least sometimes - with boys likelier to be victims than girls - and 73 percent had been physically punished by their parents. Most of the children complained they struggled to cope with the amount of homework they were assigned. Over one-third reported headaches or abdominal pains - psychosomatic symptoms of stress - at least once a week. The most stressed children reported incidence of aches or pains of four times a week. The investigation, led by Therese Hesketh, a professor at University College London (UCL) Centre for International Health and Development, pointed the finger at extreme competitiveness in China's education system, from the onset of primary school. "The competitive and punitive educational environment leads to high levels of stress and psychosomatic symptoms," the authors say. "Measures to reduce unnecessary stress on children in schools should be introduced urgently." The paper appears in Archives of Disease in Childhood, a peer-reviewed journal of the British Medical Association (BMA). The "urban" setting for the study was Hangzhou, the provincial capital of Zhejiang, while the "rural" setting was a poor county in Quzhou prefecture, in the west of the province. The study highlights some of the complexities that, it says, explain the demands for academic excellence and intolerance of failure. One factor is the country's dramatic rise in prosperity, which has created "previously... Question: What is the main idea of the passage? Options: A: Children in China sickened by school pressure B: Measures to reduce unnecessary stress on children C: The investigation, led by University College London D: Extreme competitiveness in China's education system :
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A

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I'm taking a test and have to guess the right answer to the question after the article. Article: There are three separate sources of danger in supplying energy by nuclear power. First, the radioactive material must travel from its place of production to the power station. Although the power stations themselves are strongly built, the containers used for the transport of the materials are not. Normally, only two methods of transport are in use, namely road or rail. Unfortunately, both of these may have an effect on the general public, since they are sure to pass near, or even through, heavily populated areas. Second, there is the problem of waste. All nuclear power stations produce wastes that in most cases will remain radioactive for thousands of years. It is impossible to make these wastes non-radioactive, and so they must be stored in one of the inconvenient ways that scientists have invented. For example, they may be buried under the ground, or dropped into deserted mines, or sunk in the sea. However, these methods do not solve the problem, since an earthquake could easily break the containers. Third, there may occur the danger of a leak or an explosion at the power station. As with the other two dangers, this is not very likely, so it does not provide a serious objection (,) to the nuclear program. However, it can happen. Separately, these three types of dangers are not a great cause for worry. Taken together, though, the probability of disaster is extremely high. Question: The author thinks that the ways to store nuclear wastes are _ . Options: A: easy B: impossible C: reasonable D: ineffective
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D