单项选择题A．In the student recreation center.B．In the campus dining hall.C．In the university bookstore.D．In a classroom.

填空题改“if”为“though”

单项选择题A．Michael Chang.B．Pete Sampras.C．Sergei Brugera.D．Jacob Hasi

填空题改“between”为“among”

单项选择题A．the 3 - member crew would have to dieB．the 5 - member crew would have to dieC．the 5 - member crew would have to abort the missionD．the 3 - member crew would have to abort the mission