宏观经济学与微观经济学的关系是相互独立的。（）
参考答案：错
Although lots of people were watching around，none of them ________. [ ]
A．was offered to help
B．was offering help
C．offered helping
D．offered to help
读等高线地形图，回答下列题。
下列关于河流流向的说法正确的是（）
A.从西北流向东南
B.从东南流向西北
C.从西南流向东北
D.从东北流向西南
