阿摩線上測驗
31.What does the passage mainly discuss?
(A) The effect of drought on tree-ring growth.
(B) The history of dating trees.
(C) The problems of tree-ring dating.
(D) The formation of growth rings in trees.
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統計： A(10), B(30), C(9), D(98), E(0) #881424
統計： A(10), B(30), C(9), D(98), E(0) #881424