Choose the words or expressions and complete the passage. （选择最恰当的单词或词组完成短文）Blog◊The Most Useful Inventions
The Invention Blog： A Place for People to Share Opinions
Today's question is：
| What do you think is the most useful invention of all time？ |
| By Cindy Wu | There are many the train， the car， and the airplane the useful machines， but these are not my ____． For an everyday， useful invention， I vote for the air conditioner． I live in Taibei， and during the summer the temperature can be 39 degrees Celsius or more． It's so hot! I'm not joking when I said that， if there are no air conditioners， people here cannot work or study． A lot of people might also get sick____ cool air． |
| By Jorge | The most useful invention of all time is surely the Internet． We can now reach people and do business faster． I ___ a clothing store in Mexico City， and there's a lot of competition． I not only have a website as others， but also own a online store on Taobao．com． Now， people from all over the world can buy my clothing using the Internet． I can keep in touch with friends and family in Mexico and around the world using e mail． It's faster than____ mail， and it's cheaper than using the phone! |
| By Kazuo | I also think that the Internet is useful． But， in my opinion， there is an "invention" that is even more ____， and that's electricity． Of course， this is not a man﹣made invention， but people like Benjamin Franklin and Alessandro Volta learned how to use it． If there is no electricity， many of the world's greatest inventions would not ____． |
【小题1】| A．choose | B．choices | C．thoughts | D．think |
【小题2】| A．with | B．in | C．without | D．during |
【小题3】| A．own | B．owe | C．design | D．build |
【小题4】| A．usually | B．useless | C．usual | D．useful |
【小题5】| A．importantly | B．important | C．efficient | D．efficiently |
【小题6】 
