問題詳情
20. Ecologists often study issues ____ the effects of human activities upon populations and ecosystems.
(A) whom relate to
(B) which relates to
(C) that relate to
(D) that they relate to
參考答案
答案：C
難度：簡單0.706294
統計：A(15),B(116),C(404),D(17),E(0) #
個人：尚未作答書單：關係代名詞
用户評論
【Lisa Ting】評論
Ecologists often study issues (____ the effects of human activities upon populations and ecosystems).issues(複數)(事物)--關係代名詞which/ that +動詞 relate to所以 which relate to= that relate to