A:春来江水绿如蓝
B:春江水暖鸭先知
C:江汉春风起,冰霜昨夜除
D:红豆生南国,春来发几枝
____ ____ your history teacher?
Since Peter isn't here, may I can leave a message for________?
The hottest TV show Running Man is _____ with teenagers in China.
酸雨指pH小于5.6的大气降水.在实验室中模拟酸雨喷淋樟树和楝树的树苗.结果发现,楝树的高度比对照组低约40%,而樟树的高度没有明显差异.结合生态学知识所作的合理推测是( )
已知正比例函数y=2x的图象过点(x1,y1)、(x2,y2).若x2﹣x1=1,则y2﹣y1=____.