D
　　Beyond two or three days，the world’s best weather forecasts are doubtful, and beyond six or seven they are worthless.
　　The Butterfly Effect is the reason. For small pieces of weather—to a global forecaster，small can mean thunder—storms and blizzards（暴风雪）—any prediction becomes worse rapidly. Errors and uncertainties increase，from dust devils and storms up to continent-size eddies（旋涡）that only satellites can see.
　　The modern weather models work with net-like points sixty miles apart，and even so，some starting data have to be guessed，since ground stations and satellites cannot see everywhere. But suppose the earth could be covered with sensors placed one foot apart，rising at one-foot intervals all the way to the top of the atmosphere. Suppose every sensor gives perfectly accurate readings of temperature，pressure，humidity（温度）, and any other data a weatherman would want. Exactly at noon a powerful computer takes all the data and calculates what will happen at each point at 12.01, then 12.02，then 12.03…the computer will still be unable to predict whether Princeton will have sun or rain one month away. At noon the spaces between the sensors will hide fluctuations（波动）that the computer will not know about. By 12.01，those fluctuations will already have created small errors one foot away. Soon the errors will have added to the ten-foot scale，and so on up to the size of the globe.
63．A weather forecast ____________ in the world.
A．is reliable within one or two days
B．is doubtful beyond 24 hours
C．becomes useless beyond two or three days
D．is still worthwhile in seven days
64．Usually there is a weather sub-station____________.
A．in every city 　　　　　　　　　　B．every 60 miles
C．between two cities 　　　　　　　 D．every one foot
65．Which of the following statements is true？
A．People have not placed sensors one foot apart in the atmosphere.
B．Scientists have already put sensors one foot apart in the world.
C．Every sensor gives perfectly accurate data a weatherman wants.
D．Ground weather stations and satellites can see every place on earth.
66．Our computer will not be able to know about fluctuations because ____________.
A．the sensors are not good enough
B．they are hidden by the spaces between the sensors
C．they are too far away
D．they move very fast

　　　 the good weather, we can climb the mountain easily.

A. Because　　　　 B. As　　　 C. Thanks to　 D. Because for

D

　　Beyond two or three days，the world’s best weather forecasts are doubtful, and beyond six or seven they are worthless.

　　The Butterfly Effect is the reason. For small pieces of weather—to a global forecaster，small can mean thunder—storms and blizzards（暴风雪）—any prediction becomes worse rapidly. Errors and uncertainties increase，from dust devils and storms up to continent-size eddies（旋涡）that only satellites can see.

　　The modern weather models work with net-like points sixty miles apart，and even so，some starting data have to be guessed，since ground stations and satellites cannot see everywhere. But suppose the earth could be covered with sensors placed one foot apart，rising at one-foot intervals all the way to the top of the atmosphere. Suppose every sensor gives perfectly accurate readings of temperature，pressure，humidity（温度）, and any other data a weatherman would want. Exactly at noon a powerful computer takes all the data and calculates what will happen at each point at 12.01, then 12.02，then 12.03…the computer will still be unable to predict whether Princeton will have sun or rain one month away. At noon the spaces between the sensors will hide fluctuations（波动）that the computer will not know about. By 12.01，those fluctuations will already have created small errors one foot away. Soon the errors will have added to the ten-foot scale，and so on up to the size of the globe.

63．A weather forecast ____________ in the world.

A．is reliable within one or two days

B．is doubtful beyond 24 hours

C．becomes useless beyond two or three days

D．is still worthwhile in seven days

64．Usually there is a weather sub-station____________.

A．in every city 　　　　　　　　　　B．every 60 miles

C．between two cities 　　　　　　　 D．every one foot

65．Which of the following statements is true？

A．People have not placed sensors one foot apart in the atmosphere.

B．Scientists have already put sensors one foot apart in the world.

C．Every sensor gives perfectly accurate data a weatherman wants.

D．Ground weather stations and satellites can see every place on earth.

66．Our computer will not be able to know about fluctuations because ____________.

A．the sensors are not good enough

B．they are hidden by the spaces between the sensors

C．they are too far away

D．they move very fast

　 I am a sales representative 　 and travel all over England to visit my customers.One cold February morning I was due to visit a store at 9 am.I 36　 my car,bundled my scarf around me and 　37 up the street towards his shop front.

　　　　 The Street where his store was 38 was partially blocked by two　 large,ruddy faced workmen who were teaing up the concrete.I prepared myself for the 39 cat calls(起哄).I was up early,out in the cold,and probably to be seen as a funny scene by two men I didn't even 40　 .

　　　　 Then　 I stopped　 and 4l　 my　 own father. Both he and　 my grandfather　 had 　42 much　 of their early　 careers working outside　 in　　 similar　 jobs before　 they 　43　　 and　 became　 engineers.　　 I recalled how hard Dad worked,in all kinds of 　 44　 -;how he'd come home with sunburn or frostnip(冻伤）. I realized that if was cold then these　 two　 guys were　 probably 　 45 ，given that it looked as though they'd already been　　　　　 46　 for hours.

　　　　 My customer's　 shop wasn't open yet but I was beyond being annoyed at his 47 .I Went to　 a coffee sh、op　 around the　 comer, 　 48　 　　　　　myself a hot chocolate,then two　 more　 with whipped cream .I made my　 49　 　　　　 down the Street to wards the workmen.One of them turned to me with　 a wide smile and 　50 me　 with　 a joking　 "Oh　 lovey，you　 shouldn't have!"　 To his　　 51　 ，I passed him the　 tray with　 the　 two 　 52 　chocolates.I　 replied,"Maybe　 not. 　53 it's　 too　 cold　 to　 be　 working　 outside today。"　　　　

　　　 I got two　 looks　 of genuine　 (真诚的） 54　 ，and　 a　 timely　 reminder　 that it's as easy to be 　55 　as it is to pre-judge—but the former is so much nicer!

36.A.drove　　　　 B.parked　　 C.stopped　 D.pulled

37.A.wandered　　 B.traveled　 C.stopped　 D.pulled

38.A.locate　　　　 B.served　　 C.laid　　　 D.stationed

39.A.cheering　　　 B.expected　 C.pleasant　 D.interesting　　　　

40.A.see　　　　　 B.notice　　 C.find　　　 D.know

41.A.met　　　　　 B.called　　 C.remembered D.asked

42.A.wasted　　　　 B.spent　　 C.spared　　 D.kept

43.A.retired　　　　 B.reded　　 C.qualified　 D.aged

44.A.weather　　　 B.streets　 C.pressure　　 D.stores

45.A.hungry　　　　 B.freezing　 C.excited　　 D.thirsty

46.A.waiting　　　　 B.playing　 C.chatting　 D.working

47.A.rudeness　　　 B.coldness　　　 C.lateness　　 D.disappearance

48.A.ordered　　　 Booked　　　　 C.filled　　　 D.poured

49.A.promise　　　 B.decision　　 C.way　　　　 D.choice

50.A.caught　　　　 B.greeted　　　 C.suggested.　 D.warned

5l.Ashame　　　　 B.honor　　 　C.sorrow　　　 D.shock

52. A.cold　　　　　 B.hot　　　　 C.special　　 D.soft

53．A.So　　　　　 B.or　　　　　 C.But 　　　　 D.And

54．A.thanks　　　　 B.surprise　　 C.trust　　　　 D.upset

55. A.shy　　　　　 B .careful　　 C.grateful　　　 D.kind

完形填空

　　Balloons have been used 　1　 sport balloons: gas, and hot air. Hot　　 air balloons are safer than gas balloons, 　2　 may 　3　 fire. Hot air balloons are　　 preferred（更喜欢）by most balloonists in the　　 United States because of 　4　 safety. They are also cheaper, and 　5　 to manage　　 than 　6　 balloons. Although it is easy to operate a balloon, pilots must　　7　 the　　 weather carefully. Sport balloon flights are best early in the morning or late in the　　 afternoon, 　8　 the wind is light. 　9　 the years, balloonists have tried 　10　 to　　 cross the Atlantic Ocean. It 　11　 until 1978 　12　 three American balloonists　　 succeeded. It took them 　13　 six days to 　14　 their trip from their homes in the　　 United States 　15　 Paris, France. Their voyage captured the imagination of the whole　　 world.