21.The crash of EgyptAir Flight 804 is mentioned to

[A] explain American’s tolerance of current security checks.

[B] stress the urgency to strengthen security worldwide.

[C] highlight the necessity of upgrading major U.S. airports.

[D] emphasize the importance of privacy protection.

21．【A】這是一道例證，按照常規(guī)套路文中的例子，所要證明的主題應該在例子之前，所以定位例子的前一句，Americans are willing to tolerate time-consuming security protocols in return for increased safety. 關(guān)鍵信息是tolerate time-consuming security美國人愿意忍耐耗時的安檢，對應A選項的內(nèi)容，同義替換。

22. Which of the following contributes to long waits at major airports?

[A] New restrictions on carry-on bags.南京考研補習班有哪些

[B] The declining efficiency of the TSA.

[C] An increase in the number of travellers.

[D] Frequent unexpected secret checks.

22．【C】題干問哪個能夠解釋為什么美國機場排隊很長。定位到第三段第二句Enhanced security measures since then, combined with a rise in airline travel due to the improving economy and low oil prices, have resulted in long waits at major airports. 原因出現(xiàn)在result in之前。一是因為安檢措施，二是因為我們現(xiàn)在經(jīng)濟比較好，機票比較便宜，所以大家都愿意坐飛機。選項中與原文原因相關(guān)的只有C，游客數(shù)量的增多。

23. The word “expedited” (Liner 4, Para. 5) is closet in meaning to

[A] quieter.

[B] cheaper.

[C] wider.

[D] faster.

23.【D】這是猜詞題，定位到改詞出現(xiàn)的句子，第五段第三句話：Passengers who pass a background check are eligible to use expedited screening lanes. This allows the TSA to focus on travelers who are higher risk, saving time for everyone involved. 根據(jù)指代句的內(nèi)容，使用use expedited screening lanes這種方法，可以達到這樣一種后果saving time for everyone involved.節(jié)省大家的時間，所以這道題答案應該選擇更快。南京考研補習班有哪些

24. One problem with the PreCheck program is

[A] a dramatic reduction of its scale.

[B] its wrongly-directed implementation.

[C] the government’s reluctance to back it.

[D] an unreasonable price for enrollment.

24.【D】該題也是細節(jié)定位，通過大寫名詞找到Since the beginning, this price tag has been PreCheck's fatal flaw.其中提到的問題就是this price tag ，所以答案核心詞應該是價格問題，所以答案是D價格不合理。

25. Which of the following would be the best  for the text?

[A] Less Screening for More Safety

[B] PreCheck–a Belated Solution

[C] Getting Stuck in Security Lines

[D] Underused PreCheck Lanes

25.【C】最后一道是標題。這篇文章都在說安檢太長，所以我們應該要提前去安檢。這道題一定要選擇提前安檢的選項，所以應該選B。