关于数据库和数据仓库技术的描述,不正确的是:()。
B
暂无解析
Mymother'sworkis_____(make)ourcitysafe.
Wecanseesomebirdsoverthere.(对画线部分提问)
_________________________________________
—Howmanycomputers_____inyourclassroom?
—Therearetwo.
letus(缩写形式)__________
Icansee______inLucy'sroom.