A:wasn't, wasn't sent
B:wasn't, shouldn't be sent
C:shouldn't be, wasn't sent
D:shouldn't be, shouldn't be sent
现阶段,我国社会主义公有制经济中个人消费品的分配原则是( )
下图示意某地区人口密度,读图,甲、乙两地都形成了特大城市。与甲地相比,乙地形成城市的区位优势是( )
42÷28=____
— Are those shoes yours?
— No, they aren't.
— Whose shoes are they, ?
— They are Tom's.
目前,我市已建成了多处湿地公园,既为市民提供了一个良好的休闲旅游场所,又改善了城市生态环境.请回答: