____ sales down by 30%, the company has to lay off many clerks. A. For B. As C. Through D. With
2．从同一高度分别抛出质量相等的三个小球，一个坚直上抛，一个坚直下抛，另一个平抛．则它们从抛出到落地 ［ ］
我国东北地区的中学生寒假时间很长，主要原因是（ ） A．学生喜欢放长假 B．寒假时间长是为了充分休息，有利于身体健康 C．东北地区纬度较高，冬
It was not a serious illness , and she soon it . A. got over B. got on with C. got around D. got out of
The order came ______ the soldiers ______ the small village the next morning. A. that; had to leave B. that; s
使溶液中的Al3+完全转化成Al(OH)3，应选择的最好试剂是 A．NH3·H2O B．NaOH C．CO2 D．HCl
椭圆+=1的长轴长为_________,短轴长为_________,焦点坐标为_________,顶点坐标为_________,离心率为__________.
2008年在美国爆发的金融危机已严重影响到全球经济。面对世界经济危机，我国出台积极的宏观经济政策，保增长、扩内需、调结构。下列宏观调控措施
