2. 职称英语
  3. Now there are sophisticated tests which can______ poisons in the tiniest amount

Now there are sophisticated tests which can______ poisons in the tiniest amount

游客2024-10-01  50
问题 Now there are sophisticated tests which can______ poisons in the tiniest amount not even enough to kill a mouse.
选项 A、discern
B、ascertain
C、detect
D、locate
答案 C
解析 detect：discover　(the　presence　or existence of sth．)，“查觉”、“发现”，如：The dentist could detect no sign of decay in her teeth．牙医在她的牙齿上找不到蛀蚀的迹象。discern：see clearly with eyes or mind,”辨明”、“识别”，主语一般是人或指人未辨别某事，如：It is difficult to discern the truth．很难了解真相。ascertain，
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