单项选择题
Questions 17 and 18 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each of the two questions. Now listen to the news.
The tapes of the Apollo 11 mission were first stored in（）
A．a U. S. government archives warehouse. B．a NASA ground tracking station. C．the Goddard Space Flight Centre. D．none of the above places.
单项选择题 The largest city in Canada is（）
单项选择题 According to the United States Constitution, the legislative power is invested in（）
单项选择题 What type of sentence is "Mark likes fiction, but Tim is interested in poetry."（）
