单选题
This is one reason A
why
change has not come B
more quickly
to black Americans as C
compared to
other American minorities, D
because
the sharp difference in appearance between them and their white counterparts.
【正确答案】
D
【答案解析】解析：because—because of。句意：美国黑人和白人之间在相貌上差异巨大，这就是为什么与美国其他少数民族相比，美国黑人改变没那么快的一个原因。because是连词，引导原因状语从句，而because of为介词短语，后面接名词或名词短语，本句中“the sharp difference in appearance between them and their whitecounterparts”为名词短语，故应使用“because of”。