第一节:单项选择(共15小题;每小题1分。满分15分)
11.——Jack was late for class this morning?
—— As far as I know.He’s never late for class
A.How come? B.So what? C.why not? D.Great!
12.After the operation,you should do suitable exercise to recover your .
A.power B.energy C.strength D.force