Professor White has written some short stories, but he is ______known for his plays.
A:the best
B:more
C:better
D:the most
2,4,8,16,32,____,____
图为锋面气旋图(局部),其中实线为锋线,正在向a地方向移动,虚线范围内为雨区,读图回答下题。
若关于x的方程(k+2)x2+4kx﹣5k=0是一元一次方程,则k= ____方程的解x= ____
影响气侯有哪三大主要自然因素?
下列物质与用途对应关系错误的是( )