问题补充:
I tried hard to get some information about the new technology out of his mouth, but he remained.
A. quiet
B. secret
C. silent
D. calm
答案:
A. quiet
B. secret
(答案→)C. silent
D. calm
解析:本题为四个形容词的区别,quiet为“安静的”,secret为“秘密的”,silent 为“沉默的”,calm为“心情平静的”,故选C项。