第一节 单项填空(共15小题;每小题1分,满分15分)
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。
21.The incomes of skilled workers went up.________,unskilled workers saw their earnings fall.
A.Moreover B.Therefore
C.Meanwhile D.Otherwise
22.He narrowly ________ being killed.
A.escaped B.fled
C.ran