2017年職稱英語綜合類補全短文練習五

　　【摘要】目前備考2017年職稱英語考試的考生在循序漸進的模擬中。環(huán)球網(wǎng)校為考生整理了“2017年職稱英語綜合類補全短文練習五”，希望備考2017年職稱英語考試的考生都能順利通關(guān)，更多資料敬請關(guān)注網(wǎng)校職稱英語考試頻道……

　　相關(guān)推薦：2017年職稱英語考試綜合類補全短文練習匯總

　　Pain

　　All of us have felt pain. We have cut ourselves. We have been burned. Or we have had headaches. Some of us suffer pain rarely pain rarely.__________ (46)

　　Pain can take complete control of our body and mind, making it impossible to move and even to think. Yet we need pain. Without it, we would not know if we have hurt ourselves. It is our body's warning system.__________ (47)

　　Pain is the most common reason we go to a doctor. It is the most common reason we take medicines.

　　Until recently, however, most doctors knew of only a few drugs that stopped some pains. __________ (48)

　　But new knowledge about the process of pain is helping them to control pain better.

　　Scientists have learned that the sense of pain is made up of both chemical and electrical signals. __________ (49) Scientists also have learned that the nervous system sends two different kinds of pain messages to the brain: one very fast, the other slow.

　　The first message is the warning signal. It moves at a speed of 30 meters a second. In less than a second, the brain understands that part of the body is hurt and how badly it is injured. __________ (50)

　　It tells us not to use the injured part until it heals.

　　A. And others have painful attacks all the time.

　　B. These signals travel from nerve cells in the injured area, up the spinal cord (脊髓) to the brain, and back down again.

　　C. It tells us that we are injured and should do something about it.

　　D. They knew little about the process of pain itself.

　　E. The other message moves at a speed of only one meter a second.

　　F. And they send the second, slower message of pain to the brain.

　　46.A。文章第一段提到，我們都曾感覺過疼痛。從空格前一句的內(nèi)容，即“有些人很少遭受疼痛之苦”，可以推斷空格處句子的內(nèi)容應當與這一句的內(nèi)容相反，即“另外一些人卻總是遭受疼痛的襲擊”。

　　47.C?？崭袂暗木渥又v到，疼痛是我們身體的警報系統(tǒng)。因此接下來的句子應該說明這樣說的原因。

　　48.D?？崭窈笠痪渲v到，然而，有關(guān)疼痛過程的新知識使醫(yī)生得以更好地控制疼痛。由此可見，空格處句子的內(nèi)容應與此句內(nèi)容相反，即醫(yī)生對疼痛過程了解得很少。

　　49.B。空格前一句中的“chemical and electrical signals”等詞語是對空格處句子的很好提示。

　　50.E。文章第四段最后一句提到了“two different kinds ofpain messages”，而文章最后一段第一句中又用了“Thefirstmessage”，顯然，空格處的句子應以“Theothermessage”開始。

2017年職稱英語考試復習重點句型匯總

2017年職稱英語考試題型分析

2017年職稱英語考試復習指導

2017年職稱英語考試備考經(jīng)驗匯總

　　環(huán)球網(wǎng)校友情提示：2017年職稱英語考試即將開始報名，本文整理“2017年職稱英語綜合類補全短文練習五”供考生參考練習。如果您在此過程中遇到任何疑問，請登錄環(huán)球網(wǎng)校職稱英語頻道及職稱英語論壇，我們隨時與廣大考生朋友們一起交流!

　　【摘要】目前備考2017年職稱英語考試的考生在循序漸進的模擬中。環(huán)球網(wǎng)校為考生整理了“2017年職稱英語綜合類補全短文練習五”，希望備考2017年職稱英語考試的考生都能順利通關(guān)，更多資料敬請關(guān)注網(wǎng)校職稱英語考試頻道……

　　相關(guān)推薦：2017年職稱英語考試綜合類補全短文練習匯總

　　1 A few countries are using powerful electromagnets to develop high-speed trains,called maglev trains. Maglev is short for magnetic levitation 1 ,which means that these trains float over a guide way using the basic principles of magnets to replace the old steel wheel and track trains.

　　2 If you've ever played with magnets,you know that opposite poles attract and like poles repel each other2. This is the basic principle behind electromagnetic propulsion. Electromagnets are similar to other magnets in that they attract metal objects,but the magnetic pull is temporary. You can easily create a small electromagnet yourself by connecting the ends of a copper wire to the positive and negative ends of an AA-cell battery3. This creates a small magnetic field. If you disconnect either end of the wire from the battery,the magnetic field is taken away.

　　3 The magnetic field created in this wire-and-battery experiment is the simple idea behind a maglev train rail system. There are three components to this system： A large electrical power source,metal coils lining a guide way or track,and large guidance magnets attached to the underside of the train.

　　4 The big difference between a maglev train and a conventional train is that maglev trains do not have an engine —— at least not the kind of engine used to pull typical train cars along steel tracks4. The engine for maglev trains is rather innoticeable. Instead of using fossil fuels,the magnetic field created by the electrified coils in the guideway walls and the track combines to propel the trains5.

　　5 The magnetized coil running along the track,called a guideway,repels the large magnets on the train's undercarriage,allowing the train to levitate between 1 to 10 cm above the guideway. Once the train is levitated,power is supplied to the coils within the guideway walls to create a unique system of magnetic fields that pull and push~ th train along the guideway. The electric current supplied to the coils in the guideway walls is constantly alternating to change the polarity of the magnetized coils. This change in polarity causes the magnetic field in front of the train to pull the vehicle forward,while the magnetic field behind the train adds more forward thrust.

　　6 Maglev trains float on a cushion of air',eliminating friction. This lack of friction allows these trains to reach unprecedented ground transportation speeds of more than 500 kph,or twice as fast as the fastest conventional train. At 500 kph,you could travel from Paris to Rome in just over two hours.

　　詞匯：

　　Levitate v. 懸浮 electrified v. 使帶電

　　Levitation n. 懸浮 magnetize v. 使帶磁

　　guideway n. 導向槽 line v.排列成行

　　propelb vt. 推進 underside n.下側(cè)，下面

　　propulsion n. 推進 undercarriage n. 車盤

　　注釋：

　　1. Maglev is short for magnetic levitation ：maglev 是 magnetic levitation 的縮略詞。

　　2. opposite poles attract and like poles repel each other： 異極相吸，同極相斥

　　3. AA-cell battery：5號電池

　　4. at least not the kind of engine used to pull typical train cars along steel tracks： 至少不是沿著軌道拉動典型的火車車廂的那種發(fā)動機。

　　5. the magnetic field created by the electrified coils in the guideway walls and the track combine to propel the train： 由嵌入導向壁內(nèi)的電磁線圈產(chǎn)生的磁場加上軌道，一起推動火車前進。The magnetic field 和 the track 是句子主語，created by the electrified coils in the guideway walls 是過去分詞短語，用作定語，修飾the magnetic field.

　　練習：

　　1. Paragraph 3

　　2. Paragraph 4

　　3. Paragraph 5

　　A The Main Components of the Maglev Train System

　　B High-speed Maglev due to Zero Friction

　　C The Working Principle of the Maglev Train

　　D Differences between Polarity and Magnetic Field

　　E Comparison of Maglev Trains with Traditional Ones

　　F Maglev with a Powerful Motor

　　4. Paragraph 6

　　5. Several countries in the world are using strong electromagnets

　　6. You can connect a wire to the positive and negative ends of a battery .

　　7. A unique system of magnetic fields is created by the coils

　　8. The frictionless maglev train enables you

　　A to develop a maglev train rail system

　　B To explain why maglev trains are faster

　　C to pull and push the train forward

　　D to create a magnetic field

　　E to experiment with the maglev train

　　F to travel from Paris to Rome in about two hours

　　答案與題解：

　　1. 第三段了舉了磁浮列車的三個組成部分，動力源、金屬線圈和此貼。選項A 概括了第三段列的內(nèi)容。

　　2. E 第四段就磁浮列車和傳統(tǒng)火車進行了比較：磁浮列車沒有發(fā)動機而傳統(tǒng)火車有發(fā)動機。選項C用comparsion 來概括是準確的。

　　3. C 第五段比較詳細的介紹了為什么磁浮列車會向前運動，也就揭示了磁浮列車的工作原理。

　　4. B 在第五段解釋了磁浮列車浮起和向前運動的原理之后，作者在第六段中進行了磁浮列車速度奇快的原因：去除了傳統(tǒng)火車的車輪于鐵軌的摩擦。

　　5. A 選A 的依據(jù)是本文第一段第一句：A few countries using powerful electromagnets to develop high-speed trains,called maglev trains.

　　6.D第二段說，把電線與干電池相連接就能產(chǎn)生一個小磁場，而磁浮列車的運動原理與此相同。第二段第四句是選擇D的依據(jù)。

　　7. C第五段的第二句，即“0nce the train is levitated，power is supplied to the coils within the guideway walls to create a unique system of magnetic fields that pull and push the train along the guideway”，是選擇c的依據(jù)。

　　8.F本文最后一句舉出坐上時速500公里的磁浮列車從巴黎到羅馬只需約2小時這個例子來說明磁浮列車速度之快。

2017年職稱英語考試復習重點句型匯總

2017年職稱英語考試題型分析

2017年職稱英語考試復習指導

2017年職稱英語考試備考經(jīng)驗匯總

　　環(huán)球網(wǎng)校友情提示：2017年職稱英語考試即將開始報名，本文整理“2017年職稱英語綜合類補全短文練習五”供考生參考練習。如果您在此過程中遇到任何疑問，請登錄環(huán)球網(wǎng)校職稱英語頻道及職稱英語論壇，我們隨時與廣大考生朋友們一起交流!