A new app, called “Am I Going Down?”, calculates a plane’s chances of crashing in an effort to put nervous passengers at ease. 

Created by London-based Vanilla Pixel, the app uses real flight statistics to analyze flight safety. If you’re flying on a Boeing 777 Cathay Pacific flight from Hong Kong to Los Angeles, there’s a one in 4,068,434 chance that your flight will go down during the route. And even the most eager flyers have little to fear. According to the app, if you take a flight every day for the next 11,146 years, you are unlikely to experience even one incident.

Developer Nic Johns spoke to MailOnline Travel about the app, explaining that it’s meant to calm the fears of those who are uneasy when it comes to air travel. More than 10 million routes have been assessed, using data from such sources as the Bureau of Aircraft Accidents Archives, the United States National Transportation Safety Board and the Civil Aviation Organisation. “For my analysis, I only include crashes where there was at least one passenger death - which is the relevant accident for those with a fear of flying,” Johns explained to CNN.“I then incorporate the volume of flights, weighted to the most recent, to provide the final "one in a million" statistics.”

The release of the app, however, did come at a rather awkward time - just days after AirAsia flight QZ8501 went down. “I have to admit that the timing of the release was unfortunate. I originally developed the app in February 2014, shortly before the first Air Malaysia crash,” he told MailOnline Travel.

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1.What does the App use to analyze the flight safety?

A The real flight figures

B The words of the stewardess

C The announcement on the plane.

D The route the flight flies.

解析：选A。A。 细节理解题。从文章第二段“Created by London-based Vanilla Pixel, the app uses real flight statistics to analyze flight safety.”可知，这款由伦敦一家名为Vanilla Pixel的公司开发的应用软件能够利用真实的飞行数据来分析飞行安全指数，可知答案为A。

2.From the text we can know that the App can _______

A predict when the flight will crash.

B be used in any route.

C reduce the chances of crashing

D make nervous people on the plane at ease.

解析：选D。D。细节理解题。从文章第三段第一句“…that it’s meant to calm the fears of those who are uneasy when it comes to air travel.”可知，这款应用软件的开发是为了使那些紧张的乘客能有一个平静的心情，因此答案选D。

3.The data used in the App is from EXCEPT________.

A the Bureau of Aircraft Accidents Archives

B the United States National Transportation Safety Board

C China National Aviation Corporation

D the Civil Aviation Organisation

解析：选C。C。细节理解题。从文章第三段“using data from such sources as the Bureau of Aircraft Accidents Archives, the United States National Transportation Safety Board and the Civil Aviation Organisation.”可知，这款应用软件中的数据来自日内瓦的飞机事故档案局、美国国家运输安全委员会和国际民航组织等机构而不包括中国航空公司。所以答案选C。

4.When was the App released?

A just days before the first Air Malaysia crash

B just days after AirAsia flight QZ8501crash

C just days after the first Air Malaysia crash

D just days before AirAsia flight QZ8501crash

解析：选B。B。细节理解题。从文章第四段“The release of the app, however, did come at a rather awkward time - just days after AirAsia flight QZ8501 went down.”可知，这款应用软件发布于亚航客机坠机后的几天，因此答案选B。

5.What’s the purpose of the text?

A To make advertisement for the App.

B To tell us the damage of a crash.

C To introduce the App to us.

D To analyse the reasons of a crash.

解析：选C。C。写作意图题。从整篇文章分析，本文主要是向我们介绍了预估空难的应用软件。因此答案选C。