書名：新多益聽力閱讀超高分黃金試題2000題
頁數：Reading,p.73 第119題
題目：
Most importantly,clients of Toka can use this product at the same cost
_______ traditional environmentally-unfreidly materials.
(A) along
(B) as
(C) that
(D) with
疑問：答案是(B),為什麼(D)不行?(B)的答案如何解釋呢?
謝謝!