6．Plan to get to the airport at least an hour early，or two during holidays and other busy times； this will reduce the stress of the flight．If all goes well，you will have time to relax，shop for last-minute items，or have a meal before the flight．
Flight Delays
Find out why your flight is delayed．Call the free call numbers．Find out if other airlines are experiencing similar delays．If you believe the delay is due to something other than weather or air traffic problems，then mention your suspicion （懷疑） and ask the airline agent to book you on the next available flight，either on the same air-line or a competing one．This is called"Rule 240"，and all airlines are required to do it．
Flight Cancellations （取消）
If your flight is canceled，then make a reservation（預訂）on the next flight to your destination．Usually，air-line personnel（職員） will try to book everyone on their next flight．Often they will put you on a competitor's next flight only if you request it．
If on-time arrival is important to you，when you check flights through our reservation system you can rate your choices based on their on-time arrival records．Be sure to also check the weather conditions，as they often affect flight schedules．
21．A person goes to the airport ahead of time mainly toD．
A．buy what he wants in the airport        
B．have a good rest in the airplane
C．get on the airplane immediately        
D．reduce the pressure of the flight
22．If a person calls"Rule 240"，he wants toD．
A．a(chǎn)sk the reason for the plane delay   
B．make sure the time for the next plane
C．know if other flights'delays happen
D．change for the ticket to the next flight
23．What would be the best title for the passage？C
A．Unpleasant travels     
B．Dangerous flights
C．Airport travel tips      
D．Busy airport．

分析 本文是一篇廣告布告類閱讀，文章主要講述關(guān)于航班的相關(guān)知識．首先是提早到達機場；航班延誤可以使用240規(guī)則；航班取消就要定下一班機；根據(jù)目的地的不同等候時間也不同．

解答 21-23 DDC
21．D 細節(jié)理解題．根據(jù)第一段Plan to get to the airport at least an hour early，or two during holidays and other busy times； this will reduce the stress of the flight．可知提早到達飛機場，可以減輕航行的壓力，故選D．
22．D 細節(jié)理解題．根據(jù)第二段Dask the airline agent to book you on the next available flight，either on the same air-line or a competing one．This is called"Rule 240"，可知要航空局給你定另一班機，要么是相似的航線或其他航線，這就是Rule 240，由此可知Rule 240就是想要得到其他航班的票，故選D．
23．C 推理判斷題．根據(jù)第一段Plan to get to the airport at least an hour early，or two during holidays and other busy times； this will reduce the stress of the flight．可知計劃提前一個小時到飛機場，這將減少坐飛機的壓力；和文中的第一個標題Flight Delays 文中的第二個標題Flight Cancellations （取消）．可知文章講的是飛機旅行的一些建議．故選C．

點評 本文考察學生的理解推斷能力以及細心程度，只要抓住文章的關(guān)鍵詞，采用尋讀的方法查找細節(jié)，就能找到正確答案．

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