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 modem 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. Vne 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 amount of air in the plane

B. the power of the airplane engines

C. the. pressure inside and outside the plane

D. the strength of the plane structure

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

A. It will be broken.

B. It will be made stronger.

C. It will be filled with water.

D. It will be tested by pilots,

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

A. The plane may explode in the air.

B. The pilot may lose control of the plane.

C. The engines may be damaged.

D. Too much air may get into the plane.

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

A. How Airplanes Are Made and Tested

B. The Importance of Flying Safely

C. The Danger of Testing Airplanes

D. Two Important Tests on Airplanes

Answer 1

【答案】

【1】D

【2】A

【3】B

【4】D

【解析】

本文是一篇說明文，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)著兩項(xiàng)測(cè)試進(jìn)行了詳細(xì)說明。

【1】細(xì)節(jié)理解題。根據(jù)文章第二段最后兩句Engineers can discover which part of the plane has broken. Then that part is made stronger.可知通過" tank test"，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。也就是說" tank test"可以找出飛機(jī)的優(yōu)點(diǎn)和弱點(diǎn)。故D項(xiàng)正確。

【2】細(xì)節(jié)理解題。根據(jù)第二段倒數(shù)第四句Finally, there is an explosion.可知" tank test"最終會(huì)讓飛機(jī)爆炸了。故A項(xiàng)正確。

【3】推理判斷題。根據(jù)最后一段23句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.可知在試飛的過程中，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。也就是說試飛最大的危險(xiǎn)是非吸煙可能會(huì)對(duì)飛機(jī)失去控制。故B項(xiàng)正確。

【4】主旨大意題。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。在2、3段里分別對(duì)著兩項(xiàng)測(cè)試進(jìn)行了詳細(xì)說明�？芍�本文主要關(guān)于飛機(jī)的兩項(xiàng)重要測(cè)試。故D項(xiàng)正確。