【文章解读】本文是科技文章阅读。文章主要讲述科学的不确定性,人们应该有耐心地去等待和观察。
67.We can learn from the passage that
.
A.a large planet is able to change the size of a tiny planet
B.ground controllers can affect the gravitational force of planets
C.calculating the probe speeds beyond the solar system is possible
D.predicting the weather is more difficult than predicting the path of a satellite
【答案】D
【命题立意】考查判断推理题。
A一个大行星能改变小行星的大小;B地面控制者能够影响行星的重力;C计算太阳系以外的探测仪速度是可能的;D预测天气比预测卫星的轨道更困难。根据文章第三段的r example, they think that the gravitational force of a nearby space vehicle, though tiny, is able to change the path of a much larger planet if the vehicle spends enough time close to it排除A;根据文章第三段的They do this by calculating the gravitational force from each of the passing planets until the probe speeds beyond the edge of the solar system排除C;根据文章第三段的故With the aid of Newton's laws of gravitational attraction, ground controllers can predict the path of a planetary probe (探测仪)-or satellite-with incredible accuracy排除B;根据第二段的Because of the unstable and changing state of the earth's atmosphere, for example, scientists have struggled for centuries to predict the weather with precision(精确) but failed判断选D。
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