从长远看,缓解华北地区和黄土高原地区农业缺水要( )
A:跨流域调水
B:修建水库
C:发展节水农业
D:海水淡化
①Is there a map on the wall?____ A.She is a worker.
②What 's your mother 's job? ____ B.You're welcome.
③Thank you. ____ C.14.
④How many boys are there ? ____ D.She's fine.
⑤How is your mother? ____ E.Yes,there is.
下列四幅省区轮廓图中表示黑龙江省的是( )
I can't the ball. Where is it?
一种商品打六折后的售价是72元,这种商品的原价是____元.