They are talking they had been friends for years, while in fact they have known each other for only two hours.
A. even though
B. as though
C. now that
D. until
网友回答
A. even though
(答案→)B. as though
C. now that
D. until
解析：考察连词辨析。A即使，尽管；B似乎，好像；C既然；D直到…才…；句义：他们说起话来好像是多年的好朋友，但是实际上他们只认识2小时。当as if后面的句子表示的是假的事情的时候，后面要使用虚拟语气。故B正确。