单项选择题
Which of the following is NOT mentioned by Mary as a potential disadvantage（）
A．More people in the area. B．Noise and motorways. C．Waste of land. D．Unnecessary travel.
单项选择题 According to Dr. Flores, hospitals and clinics（）
单项选择题 According to the passage, the new college-entrance system is designed to（）
单项选择题 The example in the news item is cited mainly to show（）
