问题
单项选择题
Human facial expressions differ from those of animals in the degree to which they can be ______ controlled and modified.
A. deliberately
B. consequently
C. originally
D. absolutely
答案
参考答案：A
解析： 四个选项中，A选项“deliberately有意地”符合题意。其他三项“B选项consequently结果；C选项originally最一开始；D选项absolutely绝对”都不正确。本题是说人可以有意地控制和改变表情。因此A选项为正确答案。