69.What would you give me in ____ for my recorder?
My Mp4. Do you agree?
A.reward B.turn C.preparation D.exchange
70.The activity is called “saving the earth”which refers to more reduction of ____ caused to the world by freon of refrigerators.
A.hurt B.harm C.destory D.damage
69.答案是D,in exchange for 与...交换。
70.答案是D,cause damage to 对...造成损坏。
