It is the third time so far that such a festival in my hometown．( )A．has heldB．has been heldC．will be heldD．had been held 题目和参考答案——青夏教育精英家教网—

7．Ladies and gentlemen，say hello to PIBOT．Developed in South Korea，this little machine is about the size of a child's toy，and has a head that kind of looks like a toaster （烤箱）．It's also able to fly a plane．
      The researchers responsible for the robot's development have actually managed to program it with all the knowledge and skills necessary to operate a standard airplane．Through a built-in webcam （网络摄像机），PIBOT is able to gather information about its surroundings-such as location，airspeed，and weather conditions．
       With all of this information，it's able to make decisions in much the same way as a human pilot would．It's already completed one successful test flight-sort of．In the video presented at IROS 2014 in Chicago，PIBOT was seen guiding the airplane through a short test flight in a flight simulator （模拟器）-a process which included both takeoff and landing．
       It's super cool．
      Now，it's worth mentioning that-even as impressive as PIBOT is-we aren't going to be seeing it in any real airplanes at any point in the near future．Although the little robot is certainly able to operate a plane，it doesn't quite have the skills necessary to address some of the real world situations met by pilots-such as bad weather or mix-ups on the runway．It doesn't meet the government's rules，either．
      The inventors aren't terribly discouraged，however．They expect that it's only a matter of time before they manage to get PIBOT up to the necessary standards．When the day comes，we might see airlines put to work a whole new type of pilot； one who never tires，never gets hungry，and never makes mistakes．
      So…if you've a career in aviation （航空），it might soon be time to start planning for retirement （退休）．
28．We know from the text that PIBOTA．
A．is designed to operate a plane
B．can serve as a toaster
C．was developed in Chicago
D．is very large
29．In the presented video，PIBOTD．
A．competed with a human pilot
B．completed several test flights
C．made decisions totally like humans
D．successfully guided a plane to take off and land
30．Why won't PIBOT be put into use？C
A．It can't predict weather conditions．
B．It doesn't have the skills to operate a plane．
C．It can't deal with real world situations．
D．It can't gather information abo ut its surroundings．
31．It can be learned from the text thatB．
A．PIBOT won't make any mistake in a flight
B．the inventors are confident about the future of PIBO．
C．the researchers will have to abandon the plan
D．PIBOT will surely replace human pilots one day．

14．Fast food is becoming more and （61）more popular in China，especially among children and teenagers．There are several explanations for its popularity．First，it is very convenient and （62）saves a lot of time．You just go into a fast food restaurant to order your food，and your food is ready immediately．（63）Second，you can either eat it there or（64）take it away．Third，the environment of fast food restaurants is both clean and （65）comfortable（comfort）．Fourth，excellent service （66）is provided （provide） and the quality of food is high．（67）However，fast food isn't healthy enough．It is usually not a balanced diet and low in nutritional value．Fast food is only a good choice when you are in a（n）（68）hurry and have it once in a （69）while．So I would say that It's good for people，especially children，to eat fast food as（70）little as possible．

11．adj．未加工的raw．

12．The actual amount of water needed by the crop ______ on the weather conditions．（　　）

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