問題詳情
【題組】43. What is the ETC worried about?
(A) Nanoparticles are dangerous materials.
(B) Nanoparticles will react with other things and do harm to our environment and human beings.
(C) People will be too involved in nanotech research.
(D) People will depend on this tech too much.
參考答案
答案：B
難度：簡單0.714286
統計：A(3),B(15),C(1),D(1),E(0)