The distance from the airport to the center of Sydney is______.

填空题Increase 1 3 degree per 10 years.

单项选择题What is the result of the bypass operation

单项选择题A．rebuiltB．inventedC．refinedD．designed

单项选择题The author believes that our knowledge of social systems is more secure than that of physical systems because______.

单项选择题How much time do the man and the woman have before they address the class