单选题 Human facial expressions differ from those of animals in the degree to which they can be ______ controlled and modified.

【正确答案】 A

【答案解析】[解析] A选项deliberately(有意地)符合题意。B选项consequently(因此，所以)、C选项originally(最初地)、D选项absolutely(绝对地)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。