下列培养基成分中能用于分离分解尿素的细菌的是( )
A:KH2PO4、Na2HPO4、MgSO4•7H2O、牛肉膏、尿素、琼脂、水
B:KH2PO4、Na2HPO4、MgSO4•7H2O、葡萄糖、琼脂、水
C:KH2PO4、Na2HPO4、MgSO4•7H2O、尿素、琼脂、水
D:KH2PO4、Na2HPO4、MgSO4•7H2O、葡萄糖、尿素、琼脂、水
读下面四幅图
图一中,主要牧区与主要种植业区的分界线是( )
补全下面的对话。
A.Size 8,please.
B.These shoes are nice.
C.I will take them.
D.How much are they?
E.Here you are.
A:Can I help you?
B:Yes.____Can I try them on?
A:Of course.
B:____
A:OK.____
A:$50.
B:Here is the money.____