問題詳情
【題組】40.What is the author's main purpose in the passage?
(A) To argue that alder trees are useful in forest management
(B) To explain the life cycle of alder trees
(C) To criticize the way alders take over and eliminate forests
(D) To illustrate how alder trees control soil erosion
參考答案
答案：A
難度：適中0.5
統計：A(3),B(2),C(0),D(1),E(0)