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自考《英语(二)》真题练习:填句补文(11.7)

2017年11月07日    来源:自考365   字体:   打印

  单选题

  [填句补文] Although the researchers have only just made the technical details of the microscope public, it is already on sale. It is currently the size of a refrigerator and takes several minutes to scan a circuit, but Xiao and Schrag are working ________.

  A、to take tiny chips we require

  B、to making chips any smaller

  C、to shrink it to the size of a desktop computer and cut the scanning time to 30 seconds

  D、of conducting electricity

  
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