阿摩線上測驗
25. To build a new building, we need materials like steel and concrete, the production of _____ takes out big amounts of carbon dioxide.
(A) what
(B) which
(C) that
(D) where
答案：登入後查看
統計： A(497), B(2207), C(759), D(159), E(0) #3021358
統計： A(497), B(2207), C(759), D(159), E(0) #3021358
詳解 (共 6 筆)
JC H
#6204959
因為the production of前面沒有連接詞and，所以空格不能選that
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