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

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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、whether a particular tree were

答案A

解析 本题为细节题。从文章第2段第3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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