[课 下 作 业]
Ⅰ.单项填空
1.Share prices on the Stock Exchange plunged sharply in the morning but ________ slightly in the afternoon.
A.recovered B.restored
C.regained D.retained
答案 A [recover恢复,复苏。句意:股市的股价上午暴跌,下午又略有回升。restore和regain都表示“恢复”,但都是及物动词;retain保留,保持。]