【Abstract】Rising costs for health care services and health insurance premiums are a growing burden for middle-class fa......

一、單项填空（共15小题，每小题1分，满分15分）　　1. A booksharing program is to take off， where customers can borrow up to two bo......

Host： OK， the phone rings， really early in the morning. The caller ID says the call’s from Sweden. If you’re an academic ......