题目内容
【题目】阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处的最佳选项。每个选项只能用一次。
Planes have changed the world in the last hundred years. But this great change began with two ordinary people.
Orville and Wilbur Wright were two brothers. .They were good at making bicycles, but planes were their real interest.
At that time, people knew how to build and fly gliders. But nobody could build a plane with an engine and fly it. The plane builders had two main problems: . And the planes always crashed when they tried to take off.
The Wright brothers read about these problems in newspaper, and they decided to look for answers. They made small model planes in the bicycle shop and they built a wind tunnel(风道) to test the models. They also built real gliders. .
On December17th, 1903, Orville and Wilbur pulled The Flyer onto a flat sandy beach. The plane weighted 275 kilograms. It had a petrol engine and two wooden propellers(螺旋桨). Two bicycle chains connected the propellers to the engine. .The brothers threw a coin into the air to see who should fly first. Orville won. He climbed onto the plane and started the engine.
.Wilbur ran along beside the plane. And then the plane took off! It flew for only 12 seconds, but someone took a photograph, and the plane flew into the history books.
A. There was a wind about 30 kilometers per hour on that cold day.
B. Finally, they built a plane with an enginr called The Flyer.
C. They could not make the wings strong enough.
D. They had a bicycle shop in Ohio, USA.
E. The Flyer began to move into the wind.
【答案】D；C；B；A；E
【解析】本文主要讲述了莱特兄弟是如何发明飞机的。
（1）根据此空格后的一句中出现bicycle一词，可知D为正确选项。
（2）由于此空格前面的一句说当时的那辆飞机有两个问题，故此空格必然是说问题之一，分析选项的意思，可知应选C，意思是：他们的机翼没有足够的坚固。故选C。
（3）根据前文的内容，可知他们终于建成了飞机，故选B。
（4）根据此空格后的一句，可推断此处说的是当时的风速比较高，因此他们兄弟两才用一个硬币来实验。
（5）根据下文的意思，可知E在此合理。
