注釋：
1. Hyper: 構(gòu)詞詞素，意思是：超，極度的；例如：hypersonic (超音速)，hyper text （超文本），hyperactive（極度活躍）。
2. Hyper-X：美國國家航空和宇宙航行局進行了多年的超音速飛機研究項目（Hyper X Program）中的一架實驗飛機。
3. scramjet：該詞由三個詞素縮略而成：s(upersonic超音速)，c(ombustion：燃燒) 和 ramjet (噴氣引擎)，即，一種噴氣式飛機發(fā)動機，設(shè)計用于極超音速飛行，燃料在飛機產(chǎn)生的極超音速氣流中燃燒。
4. Ann Arbor：美國密歇根州（Michigan）的一個城市，華盛頓郡郡政府所在地，因密歇根大學(xué)而聞名。
5. NASA：是National Aeronautics and Space Administration的縮寫, 中文譯名是：(美國) 國家航空和宇宙航行局。
練習(xí)：
1. The Hyper X broke the record because
A) It was the first air-breathing jet plane.
B) It flew along the equator.
C) It flew at speeds smaller than five times the speed of sound.
D) It traveled at a supersonic speed.
2. What kind of an engine did the Hyper X use?
A) A jet engine that gets oxygen from the air.
B) A scramjet engine that doesn’t carry its own oxygen supply.
C) A rocket engine that carries its own supply of oxygen.
D) A jet engine that uses no oxygen.
3. What is NOT true about the scramjet engine?
A) It goes slower than a rocket.
B) It extracts oxygen from the air that flows through the engine.
C) It works only at speeds greater than five times the speed of sound.
D) It doesn’t carry its own oxygen supply.
4. What did Werner J. A. Dahm of the University of Michigan say about the Hyper X test flight?
A) It indicated the birth of a very fast airplane.
B) It was self-powered, so it lasted only 11 seconds.
C) It can transport cargo quickly and cheaply to the brink of space
D) It is a major milestone in the journey of making a new type of very fast airplanes
5. What has NASA planned to do?
A) To make another 11-second hypersonic flight at 10 times the speed of the sound.
B) To make three more Hyper X experiments.
C) To retest the aircraft that is left.
D) To make the aircraft fly higher and longer.
答案與題解：
1. C Hyper X之所以打破記錄是因為它的飛行速度是音速的7倍。它不是第一架空氣噴氣式飛機，也不是第一架超音速飛機，所以A和D都不對。Hyper X的試飛并未繞赤道飛行，所以B也是錯誤的選擇。
2. B 第四段講了三種發(fā)動機的氧氣來源：噴氣式發(fā)動機是從空氣中汲取氧氣，火箭發(fā)動機必須自攜氧氣，而超音速沖壓噴氣發(fā)動機則不必自攜氧氣，而這正是Hyper X使用的發(fā)動機裝置。
3. A 根據(jù)第五段內(nèi)容，B、C、D都是正確的說法。第四段最后一句告訴我們，A的說法是不正確的。
4. D 文章的第六段中，密歇根大學(xué)的研究人員Werner J. A. Dahm 說，Hyper X的試飛成功只是研制一種新式快速飛機過程中的一個里程碑 （a major milestone on the way to a new breed of very fast airplanes），而不是新型飛機的誕生。所以，D是正確選擇，A是錯誤選擇。B也不是Werner J. A. Dahm想要表達的意思，C是其它工程師而不是Werner J. A. Dahm說的話。
5. A 答案可在最后一段找到。
1. Hyper: 構(gòu)詞詞素，意思是：超，極度的；例如：hypersonic (超音速)，hyper text （超文本），hyperactive（極度活躍）。
2. Hyper-X：美國國家航空和宇宙航行局進行了多年的超音速飛機研究項目（Hyper X Program）中的一架實驗飛機。
3. scramjet：該詞由三個詞素縮略而成：s(upersonic超音速)，c(ombustion：燃燒) 和 ramjet (噴氣引擎)，即，一種噴氣式飛機發(fā)動機，設(shè)計用于極超音速飛行，燃料在飛機產(chǎn)生的極超音速氣流中燃燒。
4. Ann Arbor：美國密歇根州（Michigan）的一個城市，華盛頓郡郡政府所在地，因密歇根大學(xué)而聞名。
5. NASA：是National Aeronautics and Space Administration的縮寫, 中文譯名是：(美國) 國家航空和宇宙航行局。
練習(xí)：
1. The Hyper X broke the record because
A) It was the first air-breathing jet plane.
B) It flew along the equator.
C) It flew at speeds smaller than five times the speed of sound.
D) It traveled at a supersonic speed.
2. What kind of an engine did the Hyper X use?
A) A jet engine that gets oxygen from the air.
B) A scramjet engine that doesn’t carry its own oxygen supply.
C) A rocket engine that carries its own supply of oxygen.
D) A jet engine that uses no oxygen.
3. What is NOT true about the scramjet engine?
A) It goes slower than a rocket.
B) It extracts oxygen from the air that flows through the engine.
C) It works only at speeds greater than five times the speed of sound.
D) It doesn’t carry its own oxygen supply.
4. What did Werner J. A. Dahm of the University of Michigan say about the Hyper X test flight?
A) It indicated the birth of a very fast airplane.
B) It was self-powered, so it lasted only 11 seconds.
C) It can transport cargo quickly and cheaply to the brink of space
D) It is a major milestone in the journey of making a new type of very fast airplanes
5. What has NASA planned to do?
A) To make another 11-second hypersonic flight at 10 times the speed of the sound.
B) To make three more Hyper X experiments.
C) To retest the aircraft that is left.
D) To make the aircraft fly higher and longer.
答案與題解：
1. C Hyper X之所以打破記錄是因為它的飛行速度是音速的7倍。它不是第一架空氣噴氣式飛機，也不是第一架超音速飛機，所以A和D都不對。Hyper X的試飛并未繞赤道飛行，所以B也是錯誤的選擇。
2. B 第四段講了三種發(fā)動機的氧氣來源：噴氣式發(fā)動機是從空氣中汲取氧氣，火箭發(fā)動機必須自攜氧氣，而超音速沖壓噴氣發(fā)動機則不必自攜氧氣，而這正是Hyper X使用的發(fā)動機裝置。
3. A 根據(jù)第五段內(nèi)容，B、C、D都是正確的說法。第四段最后一句告訴我們，A的說法是不正確的。
4. D 文章的第六段中，密歇根大學(xué)的研究人員Werner J. A. Dahm 說，Hyper X的試飛成功只是研制一種新式快速飛機過程中的一個里程碑 （a major milestone on the way to a new breed of very fast airplanes），而不是新型飛機的誕生。所以，D是正確選擇，A是錯誤選擇。B也不是Werner J. A. Dahm想要表達的意思，C是其它工程師而不是Werner J. A. Dahm說的話。
5. A 答案可在最后一段找到。