【简答题】Maggie ____the floor when she _____the door bell ring. A:was sweeping … heard B:swept … heard C:was sweeping … was hearing D:swept … was hearing
【简答题】如果规定 . a b c d . =ad-bc . (1)求 . 7 5 3 8 . 的值; (2)当 x= 1 7 时,求 . (x+1) (x-3) 2x (2x-1) . 的值.
【判断题】中、日、韩三国于2000年已经建议了“中、日、韩自由贸易区”。()
【单选题】The storm sweeping over this area now is sure to cause ______ of vegetables in the coming days.
【简答题】已知 , . (1).求 的值; (2).求 的值.
【简答题】设定义在 上的奇函数 (1).求 值;(4分) (2).若 在 上单调递增,且 ,求实数 的取值范围.(6分)
【简答题】The storm sweeping over this area now is sure to cause_____ of vegetables in the coming days. A. rarity B. scarcity C.invalidity D. variety
【单选题】Who is the woman ____ is sweeping the floor over there?