在用托盘天平测质量的实验中，如果使用了沾有油污的砝码，则 [ ]

A、测量值比真实值偏大

B、测量值比真实值偏小

C、测量结果仍然很准确

D、测量结果偏大偏小是不能确定的

Individuals have applied "positive thinking" either to particular external circum-stances or to some particular habit or character defect.

A. used... for... for


B. employed... upon... upon
C. adapted... to... to


D. suited... to... to