题目内容
13．Since John has arrived，let's start our work right away．Nowthat John has arrived，let's start our work right away．
分析 既然John已经到了，让我们立刻开始工作吧．
解答 答案是Now that；本题考查同义句转换；原题中的since表示"既然"可以转换成同义短语now that；故答案是Now that．
点评 本题考查句型转换，在比较原句和改写句的基础上分析同义结构或句型，要积累常见同义词、同义短语和同义结构．
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5．Jim ______ a better solution to the problem and all the people present were in favor of it．（ ）
| A． | got along with | B． | got away with | C． | came up with | D． | caught up with |
3．
We're waiting to take trips to outer space．When will it happen？According to individuals in the growing field of space tourism，it may be in five or fifty years．
Space Adventures is taking reservations for the flights，（41）H to the first manned spaceflights．The trip will cost﹩90，000，with a﹩6，000 （42）G required．More than 200people have made reservations，said Sarah，Dalton，the company spokeswoman．
John Spencer of the Space Tourism Society says that a more realistic（43）K for regular space travel is 50years．Issues of expense，difficulty，and danger must still be resolved．Oh yes-a reusable vehicle must also be invented．He adds，however，that ten years from now，a（44）D number of people may be able to visit a space station．He says he expects a fleet of private space vehicles or"space yachts"（游艇） to be in （45）B in 20to 25years．They will do what he calls"orbital super yachting．"After that，there will be cruise lines，like those that travel the Earth's oceans，as well as space hotels and resorts．
There have been only a few studies to determine the public's interest in space tourism，but they all conclude that a （46）Eof people would like to visit space and would be willing to pay good money for it．
According to expert Patrick Collins，between 5million and 20million people will head for space by 2030．He also （47）A 100flights a day leaving Earth．It would be （48）Jto have more than 100hotels in Earth's orbit（轨道），a few more orbiting the moon，and a few on the moon's surface．These hotels would （49）C more than 100，000people，who would work month-long shifts．Each hotel would have a service station．Such service stations would provide oxygen，water，and hydrogen．They might also ship（50）F safe electric power back to Earth．
If all the issues can be resolved，Collins says that space tourism could one day become a﹩1trillion．
| A．predicts B．operation C．employ D．limited E．majority F．environmentally G．deposit H．similar I．dreams J．necessary K．estimate |
Space Adventures is taking reservations for the flights，（41）H to the first manned spaceflights．The trip will cost﹩90，000，with a﹩6，000 （42）G required．More than 200people have made reservations，said Sarah，Dalton，the company spokeswoman．
John Spencer of the Space Tourism Society says that a more realistic（43）K for regular space travel is 50years．Issues of expense，difficulty，and danger must still be resolved．Oh yes-a reusable vehicle must also be invented．He adds，however，that ten years from now，a（44）D number of people may be able to visit a space station．He says he expects a fleet of private space vehicles or"space yachts"（游艇） to be in （45）B in 20to 25years．They will do what he calls"orbital super yachting．"After that，there will be cruise lines，like those that travel the Earth's oceans，as well as space hotels and resorts．
There have been only a few studies to determine the public's interest in space tourism，but they all conclude that a （46）Eof people would like to visit space and would be willing to pay good money for it．
According to expert Patrick Collins，between 5million and 20million people will head for space by 2030．He also （47）A 100flights a day leaving Earth．It would be （48）Jto have more than 100hotels in Earth's orbit（轨道），a few more orbiting the moon，and a few on the moon's surface．These hotels would （49）C more than 100，000people，who would work month-long shifts．Each hotel would have a service station．Such service stations would provide oxygen，water，and hydrogen．They might also ship（50）F safe electric power back to Earth．
If all the issues can be resolved，Collins says that space tourism could one day become a﹩1trillion．