Question

Men have always wanted to fly like birds. Birds can fly easily because they are light，but men's bodies are heavier.

Men first went up into the air in balloons. These were big bags，and they were filled with gas. Hydrogen (氢气) is a useful gas for balloons. It is lighter than air. Helium is also lighter than air，but it costs a lot of money. So balloons are usually filled with hydrogen.

Balloons have to fly with the wind as they have no engines (发动机) to drive them. Later，men made airships. They are balloons with engines. They are also filled with hydrogen.

Aircrafts (飞机) with wings now take people across the world. Powerful engines drive these machines across the sky. Some of the engines are like the engines of cars，but they are more powerful.

There is another kind of engine，we call it the jet (喷射) engine. An English engineer invented the jet engine. At the same time，Germans were also building a jet engine. In May 1941，the English engineer's new engine was fixed in an aircraft，and the aircraft flew quite well.

Jet engines are very powerful. Usually two to four are enough for an airplane，but some big aircraft need six. Anyone in a moving jet plane can feel the power of the engines. Jet planes can travel faster than sound. As a flying jet plane leaves its noise behind，we do not hear it until it has gone.

1.According to the passage，men can't fly like birds because         .

A.men don't have aircraft

B.men's bodies are too heavy

C.men don't like birds

D.men's bodies are too light

2.The underlined word“Helium”in the second paragraph is mostly like a kind of         .

A.bag       B.airplane       C.gas        D.balloon

3.We don't hear the flying jet plane's noise until it has gone because         .

A.jet planes are very powerful

B.jet planes have enough jet engines

C.anyone can feel the power of the engines

D.jet planes travel faster than sound

4.Which of the following is NOT true according to the passage?

A.Men first flew up into the air in balloons.

B.The first jet plane was invented by an English engineer.

C.1ne let engine is very powerful.

D.Two let engines are enough fot a big aircraft.

Answer

1.B

2.C

3.D

4.D

【解析】

试题分析：本文讲述了人类的飞行发展史。文中讲述了人们从古时候使用气球，到乘坐飞机，后面发展到喷气式飞机的历程。

1.B细节理解题。题意：根据短文内容，人不能像鸟一样飞翔是因为什么？A.men don't have aircraft人没有飞机；B.men's bodies are too heavy人和身体太重；C.men don't like birds人不喜欢鸟；D.men's bodies are too light人的身体太轻。由第一段里的：Birds can fly easily because they are light，but men's bodies are heavier.可知，因为人的身体太重，所以不能像鸟一样飞翔。故选B。

2.2】C词义猜测题。题意：第二段里有下划线的 “Helium”最可能像一种什么？A.bag袋子；B.airplane飞机；C.gas气体；D.balloon气球。句意：Helium is also lighter than air，but it costs a lot of money. So balloons are usually filled with hydrogen. Helium也比空气轻，但是花很多钱，因此气球通常装的是氢气。可以推测出Helium是一种装入气球的物质，由此可以推测出它是一种气体。故选C。

3.3】D细节理解题。题意：我们直到它飞远了才听到喷气式飞机的声音是因为什么？A.jet planes are very powerful喷气式飞机很强大；B.jet planes have enough jet engines喷气式飞机有足够的喷气式发动机； C.anyone can feel the power of the engines任何人可以感受到发动机的力量；D.jet planes travel faster than sound喷气式飞机比声音快。由短文最后的句子：Jet planes can travel faster than sound. As a flying jet plane leaves its noise behind，we do not hear it until it has gone.因为喷气式飞机速度比声音快，所以当它飞走了，人们才听到它的声音。故选D。

4.4】D推理判断题。题意：根据短文下面哪一个不对？A.Men first flew up into the air in balloons.人类最先乘坐气球飞入空中；B.The first jet plane was invented by an English engineer.第一辆喷气式飞机是由一位英国工程师发明的；C.The jet engine is very powerful.喷气式发动机很强有力；D.Two jet engines are enough for a big aircraft.对于一架大型飞机，两个喷气式发动机足够了。由最后一段里的：Usually two to four are enough for an airplane，but some big aircraft need six. 可知，对于一架普通飞机，两个喷气式发动机足够，对于一些大型飞机，需要六个喷气式发动机。D错，故选D。

考点：考查历史文化类短文阅读。