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

游客2024-10-01  7

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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