25. Why is USC closed to visitors on July 4?

　　A. To prepare a tour.

　　B. To update its website.

　　C. To celebrate the holiday.

　　D. To encourage a self-guided walk.

　　26. Who does Admitted Student Day target at?

　　A. AU visitors to USC.

　　B. Those applying for fall 2017.

　　C. Independent consultants.

　　D. Those admitted for fall 2017.

　　27. If a 15-people group requests a summer visit, they need to

　　.

　　A. submit Group Visit interest Form

　　B. email visior@mailbox.sc.edu

　　C. call 800-922-9755

　　D. check out Virtual Tour

　　C

　　Why doesn’t the unemployment rate ever reach zero? Economists, who generally believe that supply tends to meet demand, have long thought about this question. Even in good times, i.e. not now, there are people who can’t find work. And even in bad times, i.e. now, there are job openings. With over 14 million people out of work and looking for a job, you would think every available job would be filled. But that’s not the case. Not now and not ever.

　　On Monday, the Nobel Prize committee awarded the prize for economics to the three scholars who have done the most to explain this phenomenon. Two of the winners are Americans, Peter Diamond of MIT and Dale Mortensen of Northwestern. The third winner is Christopher Pissarides, who teaches at the London School of Economics and was born on Cyprus.

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