問題詳情
【題組】59. Why do some experts believe that grey goo cannot happen?
(A) The machines are so tiny that they can't spread quickly.
(B) We can control viruses and bacteria, so we can control grey goo as well.
(C) Grey goo only happens in fiction.
(D) They have found ways to stop grey goo.
參考答案
答案：A
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)