题目

某种录音机的利润是进价的三成，已知它的零售价是每台390元，求这种录音机的成本是每台多少元？ 答案：解：390÷（1+30%）=300（元） 答：这种录音机的成本是每台300元。补全对话（10分）A: Hello, Bill , What are you doing ?B: ___1____   A: ___2____  B: It’s about acting.   A: ___3____B: Yes, because I’m going to be an actor when I grow up. A: ___4____   B: I’m going to take acting lessons .   A: ___5___B: I want to work all over the world. It’s interesting to see different countries and people .A．What is it about ?B．How are you going to do that ?C．I’m reading a book. D．Where are you going to work ? E. Do you like it ?1. ________  2. _________  3. _________  4. ________  5. ________