一Do you have the Harry Potter books by JK Rowling in your shop? 一Sorry,there is _______ left at the moment. A.nothing B.no one C.none D
当一个物体静止在水平桌面上时,则( )A.物体对桌面的压力就是该物体的重力B.物体对桌面的压力使该物体发生形变C.桌面形变产生对物体
你估计一个湖泊里的氧浓度在什么时候(白天或晚上)和什么样的水中(污染的或未污染的)最高 A.夜间、污染的 B.夜间、未污染的 C.白天、污染
制度创新是人类文明演进的重要组成部分。阅读下列材料:(16分) 材料一 周宣王的时候,无力决定鲁君的继承人。……周平王东迁洛邑时,自己的地
You can’t imagine ____ when they received these nice Christmas presents. A. how they were excited B. how excited they were C. how excited were they D. they
人口向城市的迁移,叙述正确的是 ( ) A.迁移人口越多,城市发展越快 B.目前发达国家的农村人口正大规模迁往城市 C.发达国家城市人口比重占7
如图所示,斜面和水平面由一小段光滑圆弧连接,斜面的倾角为37°,一质量为0.5kg的物块从距斜面底端B点5m处的A点由静止释放.已知物块与水平面和斜
John _____ knowledge of radio just by staying around the radio station. A. caught on B. worked up C. took up D. picked up