题目

Mary called and asked her husbandhome at once, because she locked their daughter in the house.A. to leave B. leave C. go D. to go 答案：【答案】D【解析】句意：玛丽打电话叫她丈夫马上回家，因为她把女儿锁在家里了。考查动词辨析题。ask sb. to do sth.固定短语，表示“要求某人做某事”，可排除BC两项。leave离开，leave home离开家（去别处）；go走，go home（从别处）回家来。根据句意结构，可知选D。过点作圆的两切线，设两切点为、，圆心为，则过、、的圆方程是A． B．C． D．