A、$ 3.00. B、$ 4.00. C、$ 7.00. D、$ 10.00. A男士说他本来有10美元的，但花掉了7美元，因此剩下的只有3美元。故选A。

8. M：What have you been doing these past five years？
W：How time flies！It has been five years since we graduated from this school.
Q：What is the probable relationship between the two speakers？
9. W：Can you lend me $4.00？
M：I had $10.00， but I just spent $7.00.
Q：How much money does the man have？
10. M：Excuse me， can you tell me which bus I should take to the People’s park？
W：I’m afraid I can’t. I’ve only been here for several days.
Q：Why can’t the woman give the man directions？
11. W：What did your teacher tell you just now？
M：He said that I should have handed in my paper earlier.
Q：What can be concluded from the conversation？
12. M：I heard you were moving to a new house next month.
W：Yes. My neighbour plays the violin all night long and I can’t fall asleep.
Q：Why is the woman going to move？
13. M：My flight leaves at 4∶30.
W：Then you’d better leave for the airport at about 2∶30.
Q：What can we learn from the conversation？
14. W：Can you tell me how much it costs to send this package by air？
M：OK， let me weigh it...three pounds.
Q：Where does the conversation probably take place？