2. 外语
  3. It is understood that in a favorable climate ______. The scientists are interested in studying tree rings because they can tell

It is understood that in a favorable climate ______. The scientists are interested in studying tree rings because they can tell

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问题 It is understood that in a favorable climate ______.
The scientists are interested in studying tree rings because they can tell ______.
选项 A、whether in that area the climate was favorable or not
B、whether people took good care of the trees or not
C、whether a particular tree was healthy or not
D、how old the trees were
答案A
解析 本题为细节题。从文章第二段第三句“The change from a favorable to an unfavorable climate can be determined by reading the pattern of rings in a tree trunk.”便可看出答案是A)。
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