| 释义 |
thought n.想法，见解〖同〗diea；思考，思维，思想活动〖同〗conception
〖题〗He sat there alone for a long time,deep in ___. A.trouble B.debt C.thought D.prison
〖解〗答案C。句意：他独自坐在那沉思很久。deep(lost) in thought是习惯说法，“陷入沉思之事”；in trouble陷入困境，遇到麻烦；in debt负债；in prison在狱中，在关押中，都不合题意。
〖词组〗on second thought 继而一想，经重新考虑；take thought for 对……挂念 |