第15题: [单项选择]Human facial expressions differ from those of animals in the degree to which they can be {{U}}deliberately{{/U}} controlled and modified. A. sufficiently B. noticeably C. intentionally D. absolutely 参考答案:C 答案解析:[解析] 本句意思:人的面部表情不同于动物,区别在于人类在一定程度上有意控制和调整表情。deliberately是intentionally的同义词,表示故意地。例如:to insult intent