A:sell ; sell out
B:are sold ; sell out
C:sell; will be sold out
D:are sold ; will be sold out
计算:1x+3+6x2-9的结果为( )
—What will you do tomorrow?
—I will____.
读图,图中箭头表示地球的自转方向, 表示气压带,表示风带,完成。图中字母b所示风带的风向是 ( )
“祖国的宝岛”说的是