题目内容

17.Daniel often feelssleepy (sleep) in class because he stays up late to do his homework
every night.

分析 Daniel 经常在课堂上感到困倦,因为他每天晚上熬夜到很晚去做家庭作业.

解答 答案:sleepy
联系语境,根据关键词feels可知它是一个系动词,其后应该跟形容词;结合给出的提示词sleep为动词"睡觉",其形容词形式为sleepy,意为"困乏的,困倦的",此处的意思是"Daniel经常在课堂上感到困乏",符合语境及用法.故填写:sleepy.

点评 此题考查动词和形容词之间的转化.做题时抓住关键词准确确定出所填词的词性是重点.

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  The 3-D printer has been used to make many different things.People have made cups cars and even an airplane with it.
  Doctors have been using 3-D printers for several years.People's nervous systems have been printed out in 3-D form medical research.Some body parts have been printed and used in hospital.Several months ago,doctors used a 3-D printer to rebuild the face of a person who had a bad accident.In the future,it is expected that the printer will make human organs to save more lives.
  However there are drawbacks to the printer.At the moment,printing can be quite slow and it's still rather expensive.The average(平均的) price of a household printer is around $1,700,not including the cost of the materials.
   But as the technology develops,it shouldn't be long before disadvantages are improved.Only time will tell where this new technology will take us.

61.People could see 3-D printinginB ten years ago.
A.large high school        
B.science fiction movies    
C.digital camera shop
62.People still can't make a(n)Cwitha 3-D printer so far
A.airplane                
B.face                 
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63.What does the underlined word"drawbacks"mean?A
A.不足                 
B.趋势                
C.优点
64.Which of the following is TRUE?C
A.The normal printer can build 3-D objects y ou mant.
B.No nervous systems are printed out in 3-D form.
C.The 3-D printing can be cheaper and faster in the future
65.What's the best title of the passage?B
A.The disadvantages of 3-D printing      
B.the changes brought by 3-D printing
C.The rapid development of science.

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