Questions 19 to 21 are based on the passage you have just heard.
A.By asking for donations B.By selling public lands C.By selling government bonds D.By exploiting natural resources
单项选择题20题选().
A.Educating and training citizens B.Improving public transportation C.Protecting people's life and property D.Building hospitals and public libraries
单项选择题19题选().
A.The reasons for imposing taxes B.The various services money can buy C.The various burdens on ordinary citizens D.The function of money in the modem world