12. What excuse does the man make?

　　A. He didn’t do his work well

　　B. The housekeeper is careless

　　C. It is not the room she has reserved

　　12. What excuse does the man make?

　　A. He didn’t do his work well

　　B. The housekeeper’s careless

　　C. A large conference has just been held

　　13. What does the man promise to do?

　　A. Make an apology B. Change the room C. Charge her for half price

　　听第段材料，回答第7题。

　　’s home

　　15. What is the woman?

　　A. A writer B. A teacher C. A reporter

　　16. How can the woman know children so well?

　　A. She has her own children

　　B. She often takes care of children

　　C. She spends a lot of time with children

　　17. What does the woman usually do in the afternoon?

　　A. She stays with the children

　　B. She works in her office

　　C. She reads stories

　　听第段材料，回答第题。hich of the following is not mentioned?

　　A. Tents B. Sleeping bags C. Trailers

　　19. Which of the following is true?

　　A. The state-owned campgrounds can’t meet the growing number of campers

　　B. In the USA, most campgrounds are privately owned

　　C. The private campgrounds charge less than the public ones

　　20. The passage mainly talks about _________.

　　A. the problem of running the national parks

　　B. how states can have their own campgrounds

　　C. new campgrounds that give more people a chance to camp