Mr. Hall was a rich businessman and lived in a big house beside a beautiful river.

The river usually __16__ over in winter, and one year __17__ happened very early, so that by Christmas time it was covered with really __18__ ice. People could walk across it safely.

         The sight of this ice gave Mr. Hall __19__. He decided to have a big Christmas party on the ice. He would have all the furniture in his living-room _ 20 _ out onto the ice. He would have pretty colored lights _ 21 _  all around, and they would have a wonderful party. So he sent out __22__ to all his important friends, and on Christmas Eve they all began to _ 23   his house and then went onto the ice. They were all in very good _ 24   and thought that it _25_ a wonderful idea of Mr. Hall to have a party on the ice.

         The party   26   until late at night, and as the _ 27   guests said their merry Christmas, Mr. Hall was pleased with himself for the __28   party.

         He had drunk rather  29   at the party, so he did not wake up very early __30   morning. In fact, it was   31   midday when he got up and looked out of the window at the spot where the party was held last night. __32__ he saw there made him wonder whether he was still  33 _. He closed his eyes, opened them again but there was no mistake! The ice had ­­__34   up in the early sunshine and had carried all his living-room furniture out to __35   .

1.

A. flows           B. flowed         C. freeze           D. froze

2.

 A. freezing         B. ice            C. snow            D. rain

3.

A. thin            B. thick           C. deep            D. shallow

4.

A. a wish          B. an idea         C. a hope           D. a plan

5.

A. selling          B. carrying        C. sold             D. carried

6.

A. lay             B. lain            C. hung            D. hanged

7.

 A. introductions     B. invitations      C. informations      D. lights

8.

A. look for         B. come to        C. see              D. leave

9.

A. spirit           B. strength        C. condition         D. manners

10.

A. would be        B. had been       C. had had          D. would have

11.

 A. went to         B. kept on         C. happened        D. took place

12.

A. first            B. last            C. most            D. important

13.

A. big            B. new            C. interesting       D. successful

14.

A. many          B. little            C. a lot            D. more

15.

A. next           B. the next         C. following        D. followed

16.

 A. most           B. mostly         C. near             D. nearly

17.

A. Where         B. What           C. That             D. Which

18.

A. afraid          B. awake          C. asleep           D. alive

19.

A. dried           B. come           C. frozen          D. broken

20.

A. his house        B. the sea         C. the river         D. land

阅读理解

　　There was not a sound as morning came. Usually the chickadess (山雀)and nuthatches were out early singing as they looked for their breakfast of small insect eggs or worms under the bark. This morning only the grey outside showed that night was over.

　　Slowly the squirrel moved about. He was hungry. He must find some cones.

　　He flipped his tail and scratched his way to the door. He looked out. What was wrong? All the branches were bent over. They seemed to be covered with something different. What could it be? It was not frost. Frost made the needles look like white-edged flower. The squirrel stared and looked.

　　During the night, freezing air had come from the plain. It had spread across the high valley. As this cold air moved through the woods, the raindrops froze where they fell. They covered the tree trunks and branches with ice. When the rain stopped, it looked clear, shining and heavy.

　　The squirrel stared, sniffed and listened. He held fast to his hole. He was almost four years old, but he had never seen the world look like this. Curious and hungry, he jumped to a nearby branch. It was just below.

　　He had made the leap many times, but this morning it was a mistake.

　　When he jumped, his feet didn't hold on to the bark. He felt him self slipping. He tried to hold on to the branch. He began to slip. Spreading himself like a parachute, to slow his fall, he dropped twenty feet to the icy snow.

1．The main idea of the story is ________.

[　　]

A．winter is hard on animals

B．how ice fooled a squirrel

C．why squirrels sleep in winter

D．squirrel are foolish animals

2．Choose the best title for the story.

[　　]

3．The story was written to tell ________.

[　　]

A．about an exciting hunt

B．how a squirrel hate winter ice

C．why the squirrel hate winter ice

D．about the beauty

4．This story makes you feel ________.

[　　]

Cloud seeding is a method of artificially causing clouds to produce precipitation （降水） in the form of rain or snow．Cloud seeding has also been used in attempts to modify the severity of hail storms and hurricanes．The effectiveness of cloud seeding remains controversial （有争议的）．but it continues to be used in some regions to try to increase rainfall for agriculture and to build snow packs for water supplies and power production．

Cloud seeding was developed by American scientists Irving Langmuir and Vincent Joseph Schaefer during and after World War II．Their work began as an effort to learn more about the buildup of ice on airplane wings, and eventually led them to attempt to create rainfall by releasing several pounds of crushed frozen carbon dioxide into a cloud from an airplane．In this form, the carbon dioxide is called dry ice．On November 13, 1946, the technique appeared to produce snow directly under the cloud; the snow then turned to rain as it fell to the ground．

For their experiment, Langmuir and Schaefer selected a supercooled cloud, one in which the water droplets remain liquid in subfreezing temperatures．Their theory was that small grains of dry ice falling through the cloud would cause tiny droplets of water vapor in the cloud to freeze into crystals that attracted more water vapor．Their theory proved to be correct and eventually the crystals became heavy enough to fall from the cloud as snow．As the snow reached the warmer temperatures closer to the ground, it melted and became rain．

Another scientist, Bernard Vonnegut, produced a method of cloud seeding using silver iodide （碘化银）．He used particles of silver iodide because its crystal structure resembled that of ice in clouds．Silver

iodide also had practical advantages over frozen carbon dioxide It could be stored at room temperature

and did not require an airplane as a delivery mechanism．Instead, silver iodide crystals could be fired by

cannons （大炮） high into the air, where wind carried them into the clouds．

1.According to the text, Langmuir and Schaefer had intended to deal with__

A．how to freeze carbon dioxide??????????????????????

B．how to remove ice on plane wings

C．how to make weather forecast for the war?????????????

D how to hide planes in clouds at war

2.What is the CORRECT order of the course for cloud seeding with dry ice?

a．snow becoming rain in wanner temperatures???????????? b．crystals attracting more water vapor

c．crystals falling in the form of snow???????????????????? d．crystals becoming very heavy

e．freezing tiny droplets of water vapor into crystals

f．putting small grains of dry ice in the cloud

A．a-c-f-d-b-e??????????????? ????????????? B．b-f-e-a-c-d????????????

C．f-e-b-d-c-a??????? ????????????? D．e-a-d-c-b-f

3.Bernard chose silver iodide as a method of cloud seeding because___．

A．it is much cheaper than dry ice?????? ????????????? B．it can be stored at any rooms

C．it can be sent into clouds by wind?? ????????????? D．it is similar

4.The best title for the passage may be "____"．

A．Cloud Seeding?????? ?????????????

B．Artificial Raining???????

C．Weather Changing

D．Cloud Gathering

5.How many methods of cloud seeding are mentioned in the passage?

A．three ????????????? B．two?????? ????????????? C．one????????????? D.four