题目

I don''t think it any use taking with him , you ____ as well leave him alone .A . might       B . must       C . can       D . could 答案：A 解析: might as well do sth “还是……的好、不妨……”。如图，A、C是函数y=的图象上关于原点对称的任意两点，AB、CD都垂直于x轴，垂足为B、D，那么四边形ABCD的面积是A 9 B 3 C 6 D 18