单选题
Coffee has been a favorite drink for centuries，_______the time when we were drinking it strong and black，without sugar.
A、
during
B、
for
C、
before
D、
since
【正确答案】
D
【答案解析】
【翻译】咖啡几个世纪以来，从我们不放糖，味浓色深，开始饮用，就一直是人们喜欢的饮品。 【解析】时间连词
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