年轻天文学家:目前S彗星的部分轨道远离太阳,最近却可以通过太空望远镜发现其发出闪烁光。过去人们从来没有观察到远离太阳的彗星出现这样的闪烁光,所以这种闪烁必然是不寻常的现象。 老天文学家:通常人们都不会去观察哪些远离太阳的彗星,这次发现的S彗星闪烁光是有人通过持续而细心的追踪观测而获得的。 以下哪项最为准确概括了老天文学家反驳年轻天文学家的观点所使用的方法
A. 指出年轻天文学家使用的关键概念含义模糊。
B. 指出年轻天文学家的论据明显缺乏说服力。
C. 指出年轻天文学家的论据自相矛盾。
D. 不同意年轻天文学家的结论,并且对年轻天文学家的论据提出了另一种解释。
E. 同意年轻天文学家的结论,但对年轻天文学家的论据提出了另一种解释。
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一家石油公司实施了一项有关石油泄漏对环境的影响的调查,调查的结论是在被石油泄漏所污染的环境中生活的水禽的成活率是90%。该结论是在对位于最近发生的石油泄漏事件所在地点附近的一家兽医站所收治的水禽进行调查对,发现每十只水禽仅有一只死亡的事实基础上得出的。 下面哪一项如果为真,对有关水禽成活率的调查结论提出了最有力的质疑
A. 许多受到这次石油泄漏事件侵袭但生存下来的水禽的健康遭到了严重损害。
B. 受到这次石油泄漏事件侵袭而死亡的水禽的个头都比其所属种类的平均个头要大。
C. 大多数被石油泄漏事件侵袭的水禽受到漂浮于水面的石油的侵袭。
D. 受到这次石油泄漏事件侵袭的水禽再次被泄漏的石油侵袭时很少被送到兽医站救治。
E. 仅仅那些受到石油泄漏事件侵袭而又显示出有活下来的希望的水禽才被送到兽医站进行救治。
Task 1Directions: After reading the following passage, you will find 5 questions, or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C and D. You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the center. The floors of the ocean have many riches that can be used by man. Oil and chemicals and minerals (矿物) already are taken from the sea. By using nuclear energy, ocean water can be turned into fresh water by taking the salt out. In the near future, it is possible for human beings to produce food from farms under the sea. Food grown in the sea could help to meet the needs of population all over the world which is increasing fast. Thousands of people go hungry every day. About ten to fifteen percent of the world’s people do not have enough food. Some scientists believe that someday the sea will be used to make electric power. This would help to meet the need for more power for the world’s industries. The decreasing supply of coal, oil and gas shows that the need to find new kinds of power is urgent. We can learn from the passage that ______ .
A. there are now many farms under the sea producing food
B. more than one tenth of the world’s people are suffering from hunger
C. the supply of oil, gas and coal are increasing rapidly throughout the world
D. it is unnecessary for man to make full use of the riches of the sea
Section ADirections: This section is to test your ability to give proper responses. There are 5 recorded questions in it. After each question, there is a pause. The questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.
A. Sure.
B. Thanks.
C. Excuse me.
D. Yes, please.
Task 1Directions: After reading the following passage, you will find 5 questions, or unfinished statements, numbered 36 through 40. For each question or statement there are 4 choices marked A, B, C and D. You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the center. The floors of the ocean have many riches that can be used by man. Oil and chemicals and minerals (矿物) already are taken from the sea. By using nuclear energy, ocean water can be turned into fresh water by taking the salt out. In the near future, it is possible for human beings to produce food from farms under the sea. Food grown in the sea could help to meet the needs of population all over the world which is increasing fast. Thousands of people go hungry every day. About ten to fifteen percent of the world’s people do not have enough food. Some scientists believe that someday the sea will be used to make electric power. This would help to meet the need for more power for the world’s industries. The decreasing supply of coal, oil and gas shows that the need to find new kinds of power is urgent. It is urgent to find new kinds of power because
A. the world’s population is increasing day by day
B. scientists are worried about the idea of making full use of the sea into realities
C. nuclear energy cannot meet the need for more power for the world’s industries
D. the supply of coal, oil and gas is decreasing while the need for the world’s industries is increasing