单项选择题


Questions 29 to 31 are based on the passage you have just heard.

A．It’s because there are many developing nations.
B．It’s because people use too many man-made materials.
C．It’s because we have more and more industry.
D．It’s because we are building more vehicles.
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单项选择题
A．To interest students in a career in counseling.B．To recruit counselors to work in the placement office.C．To inform students of a university program.D．To convince local merchants to hire college students.
A．To interest students in a career in counseling.
B．To recruit counselors to work in the placement office.
C．To inform students of a university program.
D．To convince local merchants to hire college students.
单项选择题
A．Leisure sporting activities.B．Average age of athletes.C．Durability of sporting equipment.D．People’s preference for sporting activities.
A．Leisure sporting activities.
B．Average age of athletes.
C．Durability of sporting equipment.
D．People’s preference for sporting activities.
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