15．　　　　　　　 B。 根据第一小节作者觉得这个时候去山里不合适，所以这里应选mountains。

102

CONCORDE, the world’s fastest passenger plane, will soon be over 33 years old. It first 　1__ on 2 March 1969 in France. Concorde was developed by __2__ France and Britain. From 1956 these two countries had a 　3__ of a supersonic(超声波)passenger plane. In 1962 they started to __4__ together on the project. The plane 　5　 over 1.5 billion pounds to develop. It is the most tested plane in the history. It was given over 5,000 hours of testing. Concorde flies at twice the speed of 　6　. This means that it 　7　 only 3 hours 25 minutes to fly between London and New York, compare with 7-8 hours in other passenger jets. Because __8__ the five-hour time difference between the USA and Britain, it is 　__9　 to travel west on Concorde and arrive in New York before you leave London! You can catch the 10:30am 　10　 from London, Heathrow and start work in New York an hour 　11　! Concorde is much used by business people and film stars. __12__ Concorde is built at a cost of 55 million pounds. Twenty have been built so __13__. Air France and British Airway __14__ the most. They each __15__ seven planes. 1. A. invented　　　　 B. produced　　　　　 C. flew　　　　　　　　　 D. took off　

14．　　　　　　　 C。 根据后面的than可知这里应用比较级better。

13．　　　　　　　 C。 think over意思是“仔细考虑”。

12．　　　　　　　 A。 in和一段时间连用表示将来，而after只有和点时间连用可表示将来。

11．　　　　　　　 C。 在阳光下应该用in ，而不是under。

10．　　　　　　　 D。along the seashore意思是“沿着海边”。

9．　 A。 do want 表强调，意思是“我”真的很想去度假。整篇文章时态是以现在时为主，故wanted不可选，其它两个选项无此用法。

8．　 B。

7．　 A。 因为decide后面的宾语从句不缺任何成分，故用 that 来引导陈述句宾语从句。

6．　 D。 too…to…为固定结构，意思是“太……而不……”。