单项选择题
A.private goods and club goodsB.private goods and common resourcesC.public goods and club goodsD.public goods and common resources
One way to treat the re-entry depression is to regard t...
判断题One way to treat the re-entry depression is to regard the travel as a way to learn how to live your daily life.（）
The “post-travel blue”means that after a trip you feel ...
判断题The “post-travel blue”means that after a trip you feel happier so that the sky looks blue.（）
Domestic oil（）and gasoline prices are two important iss...
单项选择题Domestic oil（）and gasoline prices are two important issues in the presidential campaign.
A.explorationB.exploredC.exploringD.explore
