46 What is the best title for this passage?
(A) Tree Rings in the Colorado River Valley
(B) Tree Rings and Climate History
(C) Trees and People in Complacent Life
(D) The Protection of Trees in Colorado

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統計： A(25), B(158), C(31), D(20), E(0) #1237258

詳解 (共 2 筆)

#3251422
To find trees that f...
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#6091582
當提供持續的營養時，樹木就像人一樣，會變...
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