阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。Beforeanewtypeofairplanegoesintoserviceeverypartofitistestedagainandagain．Buttherea
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阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 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（结构）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（压力）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．whne 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（发动机）are all shut off at once．The plane begins to fall like a stone．It is the pilot's iob 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． | |||||||||||||
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阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 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（结构）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（压力）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．whne 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（发动机）are all shut off at once．The plane begins to fall like a stone．It is the pilot's iob 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． | |||||||||||||
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阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 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（结构）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（压力）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．whne 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（发动机）are all shut off at once．The plane begins to fall like a stone．It is the pilot's iob 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． | |||||||||||||
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阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 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（结构）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（压力）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．whne 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（发动机）are all shut off at once．The plane begins to fall like a stone．It is the pilot's iob 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． | |||||||||||||
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阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
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（结构）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（压力）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．whne 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（发动机）are all shut off at once．The plane begins to fall like a stone．It is the pilot's iob 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 strength of the plane structure |
| C． | the pressure inside and outside the plane |
| D． | the power of the airplane engines |
(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． | Two Important Tests on Airplanes |
| B． | The Importance of Flying Safely |
| C． | The Danger of Testing Airplanes |
| D． | How Airplanes Are Made and Tested |
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
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（结构）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（压力）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．whne 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（发动机）are all shut off at once．The plane begins to fall like a stone．It is the pilot's iob 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．
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
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（结构）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（压力）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．whne 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（发动机）are all shut off at once．The plane begins to fall like a stone．It is the pilot's iob 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．
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
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（结构）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（压力）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．whne 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（发动机）are all shut off at once．The plane begins to fall like a stone．It is the pilot's iob 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 strength of the plane structure |
| C． | the pressure inside and outside the plane |
| D． | the power of the airplane engines |
(1)
(1)
(1)| By doing the “tank test” the engineers can find out ________ | |
| [ ] | |
| A． | the amount of air in the plane |
| B． | the strength of the plane structure |
| C． | the pressure inside and outside the plane |
| D． | the power of the airplane engines |
| By doing the “tank test” the engineers can find out ________ | |
| [ ] | |
| A． | the amount of air in the plane |
| B． | the strength of the plane structure |
| C． | the pressure inside and outside the plane |
| D． | the power of the airplane engines |
By doing the “tank test” the engineers can find out ________
A．
the amount of air in the plane
B．
the strength of the plane structure
C．
the pressure inside and outside the plane
D．
the power of the airplane engines
By doing the “tank test” the engineers can find out ________
By doing the “tank test” the engineers can find out ________
By doing the “tank test” the engineers can find out ________
A．
the amount of air in the plane
A．
A．
the amount of air in the plane
the amount of air in the plane
B．
the strength of the plane structure
B．
B．
the strength of the plane structure
the strength of the plane structure
C．
the pressure inside and outside the plane
C．
C．
the pressure inside and outside the plane
the pressure inside and outside the plane
D．
the power of the airplane engines
D．
D．
the power of the airplane engines
the power of the airplane engines
(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． |
(2)
(2)
(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． |
| 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． |
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．
What will happen to the plane under the “tank test”?
What will happen to the plane under the “tank test”?
What will happen to the plane under the “tank test”?
A．
It will be broken．
A．
A．
It will be broken．
It will be broken．
B．
It will be made stronger．
B．
B．
It will be made stronger．
It will be made stronger．
C．
It will be filled with water．
C．
C．
It will be filled with water．
It will be filled with water．
D．
It will be tested by pilots．
D．
D．
It will be tested by pilots．
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． |
(3)
(3)
(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． |
| 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． |
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．
According to the text why are test flights most dangerous?
According to the text why are test flights most dangerous?
According to the text why are test flights most dangerous?
A．
The plane may explode in the air．
A．
A．
The plane may explode in the air．
The plane may explode in the air．
B．
The pilot may lose control of the plane．
B．
B．
The pilot may lose control of the plane．
The pilot may lose control of the plane．
C．
The engines may be damaged．
C．
C．
The engines may be damaged．
The engines may be damaged．
D．
Too much air may get into the plane．
D．
D．
Too much air may get into the plane．
Too much air may get into the plane．
(4)
| What might be the most suitable title for the text? | |
| [ ] | |
| A． | Two Important Tests on Airplanes |
| B． | The Importance of Flying Safely |
| C． | The Danger of Testing Airplanes |
| D． | How Airplanes Are Made and Tested |
(4)
(4)
(4)| What might be the most suitable title for the text? | |
| [ ] | |
| A． | Two Important Tests on Airplanes |
| B． | The Importance of Flying Safely |
| C． | The Danger of Testing Airplanes |
| D． | How Airplanes Are Made and Tested |
| What might be the most suitable title for the text? | |
| [ ] | |
| A． | Two Important Tests on Airplanes |
| B． | The Importance of Flying Safely |
| C． | The Danger of Testing Airplanes |
| D． | How Airplanes Are Made and Tested |
What might be the most suitable title for the text?
A．
Two Important Tests on Airplanes
B．
The Importance of Flying Safely
C．
The Danger of Testing Airplanes
D．
How Airplanes Are Made and Tested
What might be the most suitable title for the text?
What might be the most suitable title for the text?
What might be the most suitable title for the text?
A．
Two Important Tests on Airplanes
A．
A．
Two Important Tests on Airplanes
Two Important Tests on Airplanes
B．
The Importance of Flying Safely
B．
B．
The Importance of Flying Safely
The Importance of Flying Safely
C．
The Danger of Testing Airplanes
C．
C．
The Danger of Testing Airplanes
The Danger of Testing Airplanes
D．
How Airplanes Are Made and Tested
D．
D．
How Airplanes Are Made and Tested
How Airplanes Are Made and Tested
解析：
(1)
解析：
本篇分三段。第一段是概述。第二段说明为何及如何进行“tank test”，既给机舱充压，以检测飞机结构的强度，并找到最易毁坏的部位。第三段说明怎样进行试飞中的重新控制飞机。本题问进行“tank test”能查明什么，正好是第二段检测飞机不同部位的受力强度，应为B；飞机结构的（受力）强度。C项说飞机的内外压，不够全面。A、D易于排除。 (2)
解析：
问在“tank test”中飞机会怎样。按第二段内容，（把飞机放入水池，然后向机内充气加压，机内压力不断增大Finally there is an explosion．）飞机会因内压过大而爆裂。故选A． (3)
解析：
第三段说明，试飞员的任务就是：查明在发动机突然全部关掉时会发生什么，以及他怎样才能再次控制飞机。如不能，飞机就会坠毁。自然飞机失控是最危险的了。 (4)
解析：
文章第一小段开宗明义，重点讲述两个对飞机的检测（围绕这一主题，下面两段又进行了详细描述），所以选A、B和C偏离，D项太宽，本文没有讲飞机的制造，只是检测过程。
解析：
(1)
解析：
本篇分三段。第一段是概述。第二段说明为何及如何进行“tank test”，既给机舱充压，以检测飞机结构的强度，并找到最易毁坏的部位。第三段说明怎样进行试飞中的重新控制飞机。本题问进行“tank test”能查明什么，正好是第二段检测飞机不同部位的受力强度，应为B；飞机结构的（受力）强度。C项说飞机的内外压，不够全面。A、D易于排除。 (2)
解析：
问在“tank test”中飞机会怎样。按第二段内容，（把飞机放入水池，然后向机内充气加压，机内压力不断增大Finally there is an explosion．）飞机会因内压过大而爆裂。故选A． (3)
解析：
第三段说明，试飞员的任务就是：查明在发动机突然全部关掉时会发生什么，以及他怎样才能再次控制飞机。如不能，飞机就会坠毁。自然飞机失控是最危险的了。 (4)
解析：
文章第一小段开宗明义，重点讲述两个对飞机的检测（围绕这一主题，下面两段又进行了详细描述），所以选A、B和C偏离，D项太宽，本文没有讲飞机的制造，只是检测过程。
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