精选优质文档-倾情为你奉上2011 National English Contest for College students(Level C-Preliminary)Part I Listening Comprehension (30 marks)Part Two Vocabulary and Structure (15 marks )There are 15 incomplete sentences in this section. For each blank there are four choices marked A, B, C and D. Choose the one that best completes the sentence. Then mark the corresponding letter on the answer sheet with a single line through the centre.31. After four days of talks, we are glad to announce that th