题型:单项选择题 2002年,我国旅游外汇收入为203.85亿美元,出境旅游外汇支出为153.98亿美元,若其它方面旅游外汇支出31.12亿美元,则2002年我国旅游外汇收汇率为()。A.39.7%B.12.2%C.10.1%D.9.2% 查看答案
题型:选择题 There are some warnings in some countries ______ over exploitation of underground water has caused the decline of wetland and increase of desertification.A.whichB.whereC.whatD.that 查看答案