【单选题】An airport is located next to a housing development. Where X is the number of planes that land per day and Y is the number of houses in the housing development, profits of the airport are 22X-X 2 and ...
【简答题】请认真听下面一段录音,在短文空白的位置写出正确的答案。录音将反复播放三遍,请听录音。 Many people are superstitious about numbers. They think that there are lucky numbers and unlucky numbers. The number “13” is often 1 unlucky. In some parts o...
【简答题】阅读理解。 In some countries, some people do not like the number 13.They don't think 13 is a lucky number. For example. they don't like to live on the l3th floor. One day, Jack asks some friends to dinner....
【简答题】阅读理解。 In some foreign countries, some people don't like the number 13.They don't think 13 is a lucky number. For example, they don't like to live on the thirth floor. My friend Jack has got the sa...
【简答题】阅读理解。 In some countries, some people do not like the number 13. They don't think 13 is a lucky number. For example, they don't like to live on the 13th floor. One day Jack asks some friends to dinner...
【简答题】Listen to some sentences and choose the number in the bracket you hear in each sentence. Tony's classroom is on the (30th/13th) floor of teh new teaching building.