2. 外语
  3. The passage is primarily concerned with discussing______ Which of the following, if true, would be most useful in supporting th

The passage is primarily concerned with discussing______ Which of the following, if true, would be most useful in supporting th

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问题 The passage is primarily concerned with discussing______
Which of the following, if true, would be most useful in supporting the conclusions drawn from recent observations about globular clusters?
选项 A、There is firm evidence that the absolute age of the Milky Way galaxy is between 10 and 17 billion years.
B、A survey reveals that a galaxy close to the Milky Way galaxy contains globular clusters of ages close to the age of Palomar 12.
C、A mathematical model proves that small gas clouds move in regular patterns.
D、Space probes indicate that the stars in the Milky Way galaxy are composed of several different types of gas.
E、A study of over 1,500 individual stars in the halo of the Milky Way galaxy indicates wide discrepancies in there ages.
答案E
解析 The best answer is E. The recent observations have to do with the age of globular clusters in the Milky Way galaxy. One conclusion that has been drawn from these observations is that the galaxy may have formed over a long period of time (lines 27-32). The discovery that stars in the halo of the galaxy vary greatly in age would support this conclusion and weaken the conventional theory, which suggests that “all stars in the halo should be very nearly the same age” (lines 18-19). The information contained in the other choices is of little or no relevance to any conclusions drawn from the recent observations.
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