本讲为2006年下半年新的教学内容，请对照教材，练习册和语法书听录音！
   
  In which / in that / in what / in it
  people
  peoples
  In question / out of question / out of the question / at question
  1.       It is not yet known whether robots will one day have vision as good as human vision.
  2.       Engineers (__ (work) on other advances) are designing and experimenting with new types of metal hands and fingers, __ (give) robots a sense of touch.
   
  Be (系动词) used to doing 习惯于
  Used to do 过去常常
  pen is used to _write_ (write).
   
  12. They can be used to explore for minerals on the ocean floor or in deep areas of mines too dangerous for humans to enter.   
  Take part in
  Be associated with