The effect of the officer’s speech was such that the army recove

The effect of the officer’s speech was such that the army recovered its（ ）at once.
A、mention
B、moral
C、mortality
D、morale
【正确答案】：D
【题目解析】：本题考查词义辨析。mention：提及，说起；moral：道德，寓意；mortality：死亡率；morale：士气。句意：军官讲话的效果如此之好，军队顿时恢复了士气。故D选项符合题意。