题目

Though great efforts have been ________on her study,Annie can’t still make any improvements,which makes her parents greatly________. A.made;surprised          B.done;surprising          C.taken;surprised           D.given;surprising 答案：A 解析: make efforts 努力；surprised 某人感到惊奇。（-4）2的算术平方根是________ 64的立方根是 _______