問題詳情
【題組】47. More and more people in developing countries are able to buy ivory because ______.
(A) ivory has become cheaper
(B) more and more ivory is available
(C) now ivory can be produced in a lab
(D) they have more economic power
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)