单选题 Questions 50-52 refer to the following conversation.
单选题 Where dose the conversation happen?
  • A. In the bank
  • B. In the supermarket
  • C. In the post office
  • D. In the restaurant
【正确答案】 C
【答案解析】[解析] 50-52 M: Good morning, I want to send the letter to South Africa by air mail. And how many stamps do I need? W: Let me weight it for you, sir. Oh, it's 20 gram, and 20 cents per gram, that is 4 dollars in total. And you could also get express delivery. It is 50 cents per gram, but it will only take about 3 days. M: It's too expensive. I will take the air mail and here is 5 dollars. But how long will this letter get there? W: About a week.
单选题 How much will the man pay if he uses the express delivery to send his letter?
  • A. 5 dollars
  • B. 10 dollars
  • C. 15 dollars
  • D. 20 dollars
【正确答案】 B
【答案解析】
单选题 When will this letter get to South Africa?
  • A. After a day
  • B. After 3 days
  • C. After a week
  • D. After 3 weeks
【正确答案】 C
【答案解析】