The journey two naval (海军) officers made some time ago to tile very deepest point on the earth makes us realize how much of the world still remains to be explored (探测). The two men went down several miles to the bottom of the Pacific Ocean hiding in a small steel ball called a “bathy-scaphe” to find out if there are any ocean currents (急流) or signs of life.

It was necessary to set ont early, so that the bathyscaphe would come to the surfacc in daylight, and so be easily found by the mother ship which would be waiting for it. The divers began preparations at dawn and soon afterwards, when all was ready, the steel ball disappeared under the surface of the water.

In time, the temperature dropped to freezing-point and the men trembled inside the ball. They kept in touch with the mother ship by telephone describing how they felt. Then, at a depth of 3 000 feet, the telephone stopped working and they were quite cut off from the outside world. At 30 000 feet, the men were surprised by a sudden, loud noise-------even the smallest hole in the ball would have meant instant death. Luckily, though, it was only one of the outer windows that had broken. Soon afterwards, the bathyscaphe touched the soft ocean floor, raising a big cloud of “dust” made up of different kinds of small, dead sea animals. Here, powerful lights lit up the dark water and the men were surprised to see fish swimming just above them quite untroubled by thc very large wate-pressure. But they did not dare to leave the lights on for long, as the heat from them made the water boil. Quite unexpectedly, the telephone began working again and the weak but clear voices of the officers were heard on thc mother ship. After a stay of thirty minutes the men began their journey up, arriving three hours later, cold and wet through, but none the worse for their experience.

1.The officers started their journey at dawn___.  

A. because they wanted to return to the mother ship in twenty four hours

B. because the sea then was calm

C. when the sun was not too strong

D. so that they could return before dark

2.What did the officers find out at the bottom of the sea?  

A. They only found different dead sea animals.

B. They did find signs of life.

C. There was no signs of any life.

D. There was only dust.

3.The journey to the bottom of the sea helped us to realize that______. 

A. much of the world hasn’t yet been explored

B. there are not any signs of life at the bottom of the sea

C. strong water-pressure has great effect on fish

D. powerful lights can not be turned on at the ocean floor without killing fish

4.Which of the following is closest in meaning to “They were cold and wet through, but none the worse for their experience”?   

A. They were cold and wet through, which was the worst thing of all.

B. They were even worse than cold and wet through at the bottom of the sea.

C. Considering what they had just experienced, being cold and wet through was not too

bad.

D. For such an experience, being cold and wet through was not bad for them at all.

The journey two naval (海军) officers made some time ago to tile very deepest point on the earth makes us realize how much of the world still remains to be explored (探测). The two men went down several miles to the bottom of the Pacific Ocean hiding in a small steel ball called a “bathy-scaphe” to find out if there are any ocean currents (急流) or signs of life.
It was necessary to set ont early, so that the bathyscaphe would come to the surfacc in daylight, and so be easily found by the mother ship which would be waiting for it. The divers began preparations at dawn and soon afterwards, when all was ready, the steel ball disappeared under the surface of the water.
In time, the temperature dropped to freezing-point and the men trembled inside the ball. They kept in touch with the mother ship by telephone describing how they felt. Then, at a depth of 3 000 feet, the telephone stopped working and they were quite cut off from the outside world. At 30 000 feet, the men were surprised by a sudden, loud noise-------even the smallest hole in the ball would have meant instant death. Luckily, though, it was only one of the outer windows that had broken. Soon afterwards, the bathyscaphe touched the soft ocean floor, raising a big cloud of “dust” made up of different kinds of small, dead sea animals. Here, powerful lights lit up the dark water and the men were surprised to see fish swimming just above them quite untroubled by thc very large wate-pressure. But they did not dare to leave the lights on for long, as the heat from them made the water boil. Quite unexpectedly, the telephone began working again and the weak but clear voices of the officers were heard on thc mother ship. After a stay of thirty minutes the men began their journey up, arriving three hours later, cold and wet through, but none the worse for their experience.
【小题1】The officers started their journey at dawn___.  

阅读理解

　　The journey two naval (海军的) officers made some time ago to the very deepest point on the earth makes us realize how much of the world still remains to be explored (探测). The two men went down seven miles to the bottom of the Pacific Ocean inside a small steel ball called a“bathyscaphe”to find out if there are any ocean currents (急流) or signs of life.

　　It was necessary to set out early, so that the bathyscaphe would come to the surface in daylight(白昼), and so be easily found by the mother ship which would be waiting for it. The divers began preparations at dawn and soon afterwards, when all was ready, the steel ball disappeared under the surface of the water.

　　In time, the temperature dropped to freezing-point and the men trembled (颤抖) inside the ball. They kept in touch with the mother ship by telephone describing how they felt. Then, at a depth of 3,000 feet, the telephone stopped working and they were quite cut off from the outside world. At 30,000 feet, the men were surprised by a sudden, loud noise: even the smallest hole in the ball would have meant instant (立即的) death. Luckily, though, it was only one of the outer windows that had broken. Soon afterwards, the bathyscaphe touched the soft ocean floor raising a big cloud of“dust”made up of different kinds of small, dead sea animals. Here, powerful lights lit up the dark water and the men were surprised to see fish swimming just above them quite untroubled by the very large water pressure. But they did not dare to leave the lights on for long, as the heat from them made the water boil. Quite unexpectedly, the telephone began working again and the weak but clear voices of the officers were heard on the mother ship. After a stay of thirty minutes the men began their journey up, arriving three hours later, cold and wet through, but none the worse for their experience.

1．What did the officers find out at the bottom of the sea?

[　　]

A．They only found different dead sea animals.

B．They did find signs of life.

C．There was no signs of any life.

D．There was only dust.

2．The journey to the bottom of the sea helped us to realize that ________.

[　　]

A．much of the world hasn’t yet been explored

B．there are not any signs of life at the bottom of the sea

C．strong water - pressure has great effect on fish

D．powerful lights can not turned on at the ocean floor without killing fish

3．Which of the following is closest in meaning to“They were cold and wet through, but none the worse for their experience.”

[　　]

A．They were cold and wet through, which was the worst thing of all.

B．They were even worse than cold and wet through at the bottom of the sea.

C．Considering what they had just experienced, being cold and wet through was not too bad.

D． For such an experience, being cold and wet through was not bad for them at all.

阅读理解

　　The sea is the largest unknown part of our world. It covers seventy－one per cent of the earth. There is still much to be discovered about working to explain its mysteries(神秘).

　　Some are studying ways of bringing the ocean's huge supply of water to the deserts of the world. Others hope to control the weather by learning more about the exchange of heat and moisture(潮湿) between the ocean and the air. Others are studying the ways in which sound travels and is affected by water and heat.

　　One of the most interesting projects in oceanography(海洋学) is the work of mapping the ocean floor. Only a very small part of it has been mapped. This was not important when only surface ships sailed the world's ocean, but it can mean the difference between life and death to men in submarines(潜水艇).

　　Long ago there was only one way to find out how deep the ocean was. A seaman could throw a weighted rope over the side of his ship. Then he pulled the rope up after it had reached the bottom. But this was not a very exact way of measuring.

　　In the 20th century a better way was found. Sound was used to measure the ocean. Seamen did an experiment. They dropped a number of devices that would burst with a loud noise when they hit the bottom. And a little instrument measured the time it took for the sound to reach the ship. This has helped the scientists to map the ocean floor.

　　Underwater photography is also important in mapping parts of the ocean floor.

　　Around the edges of the continents the ocean floor is flat and the water does not become much deeper for about 30 miles.

　　The area near the continents, where the water is not so deep, is the place where the ocean's greatest riches in marine(海洋的) life are found. Below these living creatures and plants are the largest unknown quantities of mineral.

　　At the end of the flat part the sea floor suddenly drops down forming deep hollows which are shaped like bowls. These huge hollows hold most of the world's water.

1．The sea covers ________.

[　　]

A．less than a quarter of the earth

B．one third of the earth

C．about half of the earth

D．almost three quarters of the earth

2．Scientists are studying the oceans. In the passage, which of the following is not mentioned?

[　　]

A．How to control the weather.

B．How sound travels and is affected by water and heat.

C．Why people depend on the sea so much.

D．How to irrigate the deserts of the world with the ocean's huge supply of water.

3．Measuring the depth of the ocean with a weighted rope is ________.

[　　]

A．exact

B．a new way

C．false

D．nearly correct but no exact

4．Another aid to the mapping of the ocean floor has been in the ________.

[　　]

5．The ocean's greatest riches are found ________.

[　　]

A．in deep hollows

B．in the flat part of the sea

C．close to the continents

D．around islands

Some time ago, two navy officers made a journey to the deepest point on the earth. The two men went down seven miles to the__1__of the Pacific Ocean inside a small steel ball to find out if there are any__2__of life.

They set out early so that the ball would come to the surface in the__3__and so be easily found by the mother ship. The divers began__4__at dawn and soon afterwards the ball__5__under the surface of the water.

__6__, the temperature dropped to freezing point and the men trembled inside the ball. They kept in touch with the mother ship by telephone__7__how they felt. At a depth of 3,000 feet, the telephone stopped working and they were quite cut__8__from the outside world. At 30,000 feet, the men were shocked by a sudden loud__9__- even the smallest hole in the ball would have__10__instant death. Luckily, it was only one of the outer windows__11__had broken.

Soon afterwards, the ball__12__the soft ocean floor, raising a big cloud of "dust" made__13__different kinds of small, dead sea animals. Here, powerful lights lit up the __14__water. The men were surprised to see fish swimming just above them, quite__15__ by the very large water pressure. But they did not__16__to leave lights on for long, as the great__17__from them made the water boil. Quite__18__, the telephone began working again and the weak__19__ clear voices of the officers were heard on the mother ship. After a__20__of thirty minutes the men began their journey up, arriving three hours later.

1. A. foot          B. base         C. bottom       D. tip

2. A. marks         B. signs        C. signals       D. messages

3. A. evening        B. night       C. secret        D. daytime

4. A. diving         B. rising       C. traveling      D. preparations

5. A. disappeared    B. floated       C. threw        D. flew

6. A. In time        B. On time      C. At times      D. At one time

7. A. guiding       B. realizing      C. describing     D. imagining

8. A. down         B. over         C. off           D. out

9. A. voice         B. noise         C. explosion     D. shout

10. resulted         B. suggested     C. meant        D. saved

11. A. where        B. that          C. which        D. whose

12. A. touched      B. visited        C. attacked      D. landed

13. A. of           B. from         C. up of         D. into

14. A. green        B. blue          C. dark         D. hot

15. A. unbelieved    B. unchanged    C. uncovered     D. untroubled

16. A. use          B. need         C. dare          D. think

17. A. light         B. heat         C. pressure       D. sound

18. A. unexpected    B. uncovered    C. unknown      D. uncontrolled

19. A. or           B. and          C. but           D. either

20. A. living        B. stay          C. rest          D. break