Section DDirections: in this section you will hear a recorded short passage. The passage is printed in the test paper, but with some words or phrases missing. The passage will be read three times. During the second readings you are required to put the missing words or phrases on the Answer Sheet in order of the numbered blanks according to what you hear. The third reading is for you to check your writing. Now the passage begin.Hello, everyone. This is the captain(机长)speaking（20）to Flight JK900 leaving for Chicago. Our flight time today is 2 hours and 35 minutes，and we will be flying at an average altitude(高度)of 31，000 feet. The（21）in Chicago is a quarter past twelve，and the current weather is cloudy，but there is a chance of （22）later in the day. We will（23）at Gate 7 at the Chicago airport. On behalf of our Airlines, I wish you an enjoyable（24）in Chicago. Sit back and enjoy the flight.