如图所示，A、B两物块用一根轻绳跨过定滑轮相连(不计滑轮的质量和摩擦) ，静止于斜面体两个光滑斜面上的相同高度处，两斜面的倾角分别为α=60°和β
“pq为真”是“p为假”的 （ ） A．充分不必要条件． B．必要不充分
读下图，回答问题。 会对南水北调东线供水造成负面影响的是（ ） A．建立污水处理厂
—The mountain in our hometown isn't very _____. —I agree with you. Few _____ like to go sightseeing there. A. touristy; tourists B. touristy
— Would you like to go to Shanghai Disneyland? It opened this June. — ________. I’m sure I’ll have a great time there. A. I’m afraid not B. It doesn’t matter C. That s
选择一个角度，简析这首小诗。 新 月 沙鸥 新月弯弯， 像一条小船。 我乘船归去， 越过万水千山。 花香。夜暖。 故乡正是春天。 你睡着了吗? 我在
图1的现象对我国经济所带来的影响中，下列认识正确的都有①人民币升值——若出口商品外币价格不变、则本币价格降低——企业利润减少②人民币
The old man, _______ abroad for twenty years , is on the way back to his motherland. A. to work B. working C. to have worked D. having worked.
