（），适用于分析单个因素的敏感度，但忽略了各因素之间的关系及相互联动变化的可能性及其共同影响。
查看答案
The boss ____ his enormous influence by reason of his position.
A. reserves
B. keeps
C. retains
D. withheld
Why did Mr. Peebles come to the fortune-teller?
A. His wife persuaded him to do so.
B. He was interested in hocus-pocus.
C. He heard about the fortune-teller from a friend.
D. He wanted to solve some problems.
社会文化环境对人的影响，是通过各种直接和()的方式进行的。
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