【简答题】Ask the expert Q: My girlfriend always wants us to do everything together and she doesn't understand that I'm not interested in the same things as her. I don't want to make her 1 , but I can't go on ...
【单选题】Which of the following is not an example of the opportunity cost of going to school?a.The money a student could have earned by working if he had not gone to college.b.The nap a student could have enj...