第20题: [单项选择]Passage Three Questions 32 to 35 are based on the passage you have just heard. A. 400 years. B. 300 years. C. 200 years. D. 100 years. 参考答案:C 答案解析:[听力原文] Roughly how long has the postage stamp been in use
第21题: [填空题]Who use steamboats today The() 参考答案:tourists 答案解析:
题目询问今天谁使用汽船。由“Today many tourists come to travel on the steamboats”(今天许多游客乘坐汽船来这里旅行)可