Question

【題目】Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others.

The first is called the “tank test”. A modern airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure (結(jié)構(gòu)) of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (壓力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger,

The most dangerous test happens when the new plane is going through test flights in the air. The test pilot must find out exactly what happens when the engines (發(fā)動(dòng)機(jī)) are all shut off at once. The plane begins to fall like a stone. It is the pilot’s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers.

【1】By doing the “tank test”, the engineers can find out ________.

A.the power of the airplane enginesB.the amount of air in the plane

C.the strength of the plane structureD.the pressure inside and outside the plane

【2】What will happen to the plane under the “tank test”?

A.It will be tested by pilots.B.It will be broken.

C.It will be made stronger.D.It will be filled with water.

【3】According to the text. why are test flights most dangerous?

A.Too much air may get into the plane.B.The plane may explode in the air.

C.The pilot may lose control of the plane.D.The engines may be damaged.

【4】What might be the most suitable title for the text?

A.How Airplanes Are Made and TestedB.Two Important Tests on Airplanes

C.The Importance of Flying SafelyD.The Danger of Testing Airplanes

Answer 1

【答案】

【1】C

【2】B

【3】C

【4】B

【解析】

本文是一篇說(shuō)明文。新的飛機(jī)在投入使用之前，要經(jīng)歷一系列的測(cè)試，其中有兩項(xiàng)測(cè)試特別重要，文章分別對(duì)這兩項(xiàng)測(cè)試進(jìn)行了詳細(xì)的說(shuō)明。

【1】細(xì)節(jié)理解題。根據(jù)文章第二段“Engineers can discover which part of the plane has broken. Then that part is made stronger,”可知通過(guò)水箱測(cè)試，研究人員可以發(fā)現(xiàn)飛機(jī)結(jié)構(gòu)的缺點(diǎn)，進(jìn)行補(bǔ)弱。即水箱測(cè)試可以找出飛機(jī)的優(yōu)點(diǎn)和弱點(diǎn)。故選C。

【2】細(xì)節(jié)理解題。根據(jù)文章第二段“ Finally, there is an explosion.”可知水箱測(cè)試最終會(huì)讓飛機(jī)爆炸。故選B。

【3】推理判斷題。根據(jù)文章最后一段“The plane begins to fall like a stone. It is the pilot’s job to find out how he can get control of the plane again. ”可知在試飛的過(guò)程，試飛員要關(guān)閉發(fā)動(dòng)機(jī)，飛機(jī)就像是石頭一樣下落，然后試飛員再找到控制飛機(jī)的方法。所以，試飛最大的危險(xiǎn)是對(duì)飛機(jī)失去控制。故選C。

【4】主旨大意題。根據(jù)文章第一段“Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others.”文章第一段提及新的飛機(jī)在投入使用之前，要經(jīng)歷一系列的測(cè)試，其中有兩項(xiàng)測(cè)試特別重要。文章二、三分別對(duì)這兩項(xiàng)測(cè)試進(jìn)行了詳細(xì)的說(shuō)明。所以本文主要是關(guān)于飛機(jī)的兩項(xiàng)重要測(cè)試。故選B。