老师推荐了一个外国网站上的quiz，只有答案，没有结束，让人很头痛啊~我就先把问题简单化了哈

1.  consumption: $70
     government purchase: $20
     net taxes:   $25
     investment: $15
     imports:  $5
     exports:  $20
     求 a. the value of household saving ?                b.  the value of government saving?

2.Last year in the country of  ABC, government purchases of goods and sevices were $20, and the government had a budget deficit of $3. Consumption expenditure was $7,and there was dissaving of $2. 求 GDP in ABC was?
这道题我用收入法能算出来，但是支出法就算不出来了

3. The country og XYZ has zero net exports. Government purchases of goods and services are $5 and the government has a budget surplus of $5. Investment is $5.求Saving in XYZ is ?


4. If the government has a budget deficit and saving is equal to investment, then

aggregate expenditure does not equal aggregate income
imports equal exports
imports are less than exports
imports exceed exports


5. Tom graduates from university and cannot find a job in his field , so he takes a job mouing lawns 3 days a week. Tom is discourged because he cannot find a job that uses his university degree. Tom is counted as a. employed    b. employed   c.discouraged worker

昨天想了很久都想不通， 希望各位高手帮个忙！万分感谢啊！！！！