The origin of coffee? I never really thought about it. When I was a kid, coffee was always around.

4. B    5. D    6. A    7. A
【解析】
本文是一篇说明文。文章主要讲述咖啡的起源。
【4题详解】
推理判断题，根据第二段的Maybe if coffee had been around, he would have changed some of the water into coffee.(也许如果咖啡在身边，他会把一些水变成咖啡)可推断，耶稣没有把水变成咖啡是因为在那时没有咖啡。故选B。
【5题详解】
推理判断题。根据第二段的 Maybe that's what “B. C." in those timelines meant: "before coffee."( 也许那就是时间轴上的B.C.意思是“在咖啡之前。”的原因)，和最后一段So now that I know about Kaidi and his goats, if someday-in the far, far future, of course someone calls me an "old goat",  I'll just smile, take another sip of coffee, and maybe do a little dance.(所以现在我知道了凯迪和他的山羊，如果有一天，在遥远的未来，有人叫我“老山羊”，我会微笑，再喝一口咖啡，也许会跳一段舞蹈。)可推断，作者写这篇文章时，语气是幽默的。故选D。
【6题详解】
词句猜测题。根据上文When he ate the berries, he stayed awake. The unnamed monk came up with the idea of drying and boiling the berries.(当他吃浆果时，他保持清醒。这位无名和尚想出了烘干并煮沸浆果的主意。)以及下文His fellow monks loved the new drink because it encouraged them to pray and it tasted good too.(他的同修们爱上了这种新饮料，因为它激励他们祈祷并且尝起来也美味)可推断，煮沸这些浆果后的新饮料面世，it指代这种新饮料。故选A。
【7题详解】
主旨大意题。通读全文特别是文章首句The origin of coffee?可推断，文章作者以幽默的口味讲述了咖啡的起源。所以短文的最佳标题为“咖啡的起源”。故选A。