单选题 The______they felt for each other was obvious to everyone who saw them.
A. affection B. adherence C. sensibility D. sensitivity

【正确答案】 A

【答案解析】[解析] 句子大意为：他们两人之间的______显而易见。在给出的选项中：affection“喜爱”；adherence“依附”；sensibility“敏感”；sensitity“敏感”。所以，正确答案是A。