【简答题】WASHINGTON(Reuters)?People who drink two or more sweetened soft drinks a week have a much higher risk of pancreatic cancer (胰腺癌), an unusual but deadly cancer, researchers reported on Monday. People w...
【单选题】若曲线y=x 4 的一条切线l与直线x+4y﹣2011=0垂直,则直线l的方程为 [ ]
【简答题】判断下列直线的位置关系(填“平行”或“相交”): (1)直线3x+y-4=0与直线x-3y+4=0; (2)直线6x+2y+5=0与直线y=-3x-1; (3)直线2x+1=0与直线2y+3=0; (4)直线2x+y-4=0与直线x+3y-7=0; (5)直线5x-2y+4=0与直线10x-4y+3=0.
【简答题】一个养鸡场养鸡1200只,养鸭的只数比鸡多1/5,养鸭多少只?
【简答题】阅读理解 Washington ( Reuters )-People who drink two or more sweetened soft drinks a week have a much higher risk of pancreatic cancer (胰腺癌),an unusual but deadly cancer,researchers reported on Monday. Pe...
【简答题】一个养鸡场养鸡1200只,养鸡的只数比鸭多1/5,养鸭多少只?
【简答题】判断下列直线位置关系(填入“相交”、“平行”或“重合”) (1)直线 3x+y-4=0 与 直线 x-3y+4=0 ; (2)直线 6x+2y+5=0 与 直线 y=-3x-1 ; (3)直线 2x+1=0 与 直线 2y+3=0 ; (4)直线 2x+y-4=0 与 直线 x+3y-7=0 ; (5)直线 5x-2y+4=0 与 直线 10x-4y+3=0 ;
【单选题】--- Is there anything special in the newspaper today? --- Yes. People who drink wine ___ to drive after May Day.
【单选题】People who dont regularly drink caffeine tend to be more ______ to its negative effects.