Farmers are being told more needs to be done to stop them injuring at work.One in five British workplace deaths happens in agriculture even though farmers are only a small part of the working p
汽车以20m/s的速度在平直公路上行驶，急刹车时的加速度大小为5m/s2，则自驾驶员急踩刹车开始，2s与5s时汽车的位移之比为 A．5∶4 B．4∶5
69. I have some problems. Please _____ them for me. A. clear away B. clean away C. clear up D. clean off
The mayor will personally present the gold medals _______ the winning athletes at the sports meet. A. by B. with C. to D. for
按照示例仿写句子 示例：没有泥石的聚积，就没有高山的巍峨。 仿写：
观察如图，下列叙述不正确的是（） A． 如果该图为组成细胞的化合物，那么A中含有的元素为H、O B． 如果该图表示的是组成细胞
Though _________ money, his parents managed to send him to university. A. lacked B. lacking of C. lacking D. lacked in
The photo________the memory of the days in Hangzhou，when he was looked after attentively by the peasant. A．brought in B．brought back C．brought on D．brought about
且
的最小值为 。
