单选题 Albert Einstein may have made the discoveries that led to nuclear and solar power, lasers and even a physical description of space and time, but Sir Isaac Newton had a greater impact on science and mankind, according to a poll. Newton, the 17th-century English scientist most famous for describing the laws of gravity and motion, beat Einstein in two polls conducted by distinguished London-based scientific academy, the Royal Society. More than 1,300 members of the public and 345 Royal Society scientists were asked separately which famous scientist made a bigger overall contribution to science and which made a bigger positive contribution to humankind. Newton was the winner on all counts, though he beat the German-born Einstein by only 0.2 of a percentage point (50. 1 percent to 49. 9 percent) in the public poll on who made the bigger contribution to mankind. The margin was greater among scientists: 60.9 percent for Newton and 39. 1 percent for Einstein. The results were announced ahead of the "Einstein vs. Newton" debate, a public lecture at the Royal Society on Wednesday evening. "Many people would say that comparing Newton and Einstein is like comparing apples and oranges, but what really matters is that people are appreciating the huge amount that both these physicists achieved, and that their impact on the world stretched far beyond the laboratory," said Royal Society president Lord Peter May. Pro-Newton scientists argue he led the transition from an era of superstition and dogma (教条、宗教) to the modern scientific method. His greatest work, the "Principia Mathematica", showed that gravity was a universal force that applied to all objects in the universe, finally ruling out the belief that the laws of motion were different for objects on Earth and in the heavens. Einstein's supporters point out that his celebrated theory of relativity disproved Newton's beliefs on space and time and led to theories about the creation of the universe, black holes and parallel universes. He also proved mathematically that atoms exist and that light is made of particles called photons (光子), setting the theoretical foundations for nuclear bombs and solar power.

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单选题Questions 19 to 22 are based on the passage you have just heard.

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单选题What does the author mean by saying "For many, retirement becomes an unobtainable dream" (Lines 7, Para. 1)?

单选题Solar energy causes

单选题One of the union members wished to put a change of the policy, but it was ______ by the chairman.

单选题Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.

单选题Questions 19 to 22 are based on the conversation you have just heard.

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单选题The farmer ______ his horse for the night at the only stable in town.

单选题Which of the following might be the topic of the next paragraph?