单选题 _____ sermons retained their preeminence in religious life during most of fine twentieth century, they are gradually losing the central places as churches devote more energy to social activities.无

A、 As
B、 For
C、 While
D、 Although

【正确答案】 D

【答案解析】句意：虽然在二十世纪的大部分时间里，布道在宗教生活中保持着卓越的地位，但是他们正在逐渐失去主导地位，因为教堂在社会活动中花费了很多精力。由前后两个分句的句意可知，应该填表示转折关系的词。