问题
单项选择题
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
答案
参考答案：A
解析：use...for是“运用，应用”之意，与apply...to意思相同。