2015•贵州毕节)-Do you know Lang Lang?
-Of course. He is a famous pianist and he plays the piano_______ .
A:beautiful
B:more beautiful
C:beautifully
D:more beautifully
苏伊士运河是哪两个大洲的分界线 ( )
设变量x,y满足约束条件y≥0x-y+1≥0x+y-3≤0,则z=2x+y的最大值为 ( )
把句子换成另一种说法,句意不变
他把手中的碗交给少年。
①
②