自考《英语（一）》试题练习：填句补文（11.2）
2017-11-02 09:58 自考365
单选题
[填句补文]Gang Xiao and Ben Schrag at Brown University， visualize the current by measuring subtle（细微的） changes in the magnetic field of an object and ________.
A、to shrink it to the size of a desktop computer
B、to make it capable of measuring very weak changes in magnetic fields
C、as well as revealing microscopic defects in anything from aircraft to banknotes
D、converting the information into a color picture showing the density of current at each point
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