(tell)作者。故选B。

　　15．A.enjoying B．doing

　　C．suffering D．missing

　　答案：C　由上文知Lightning失去了好朋友Sam，因此她应感到痛苦，而不是快乐。enjoy "享受"；suffer "忍受痛苦"；miss "思念"。虽然miss有一定道理，但与下文的the pain不能呼应，且缺宾语。故选C。

　　16．A.disappointment B．anger

　　C．excitement D．fun

　　答案：A　见不到以前的朋友Sam, Lightning眼神中应流露出痛苦和失望，而不是愤怒、兴奋或乐趣。故选A。

　　17．A.came B．went

　　C．gathered D．walked

　　答案：B　come by "经过，从......旁经过"，但不能指时间；go by "时间流逝"；gather "聚集"；walk "走路"。故选B。

　　18．A.seemed B．appeared

　　C．happened D．meant

　　答案：C　seem "好像"；appear "好像，出现"；happen "碰巧，发生"；mean "打算，意思是，意味着"。此处表示"我"不经心地看了一眼沙发旁的地板，应用happened。故选C。

　　19．A.what B．which

　　C．that D．where

　　答案：D　由上文的"我们的沙发"以及下文"Sam的一个雕塑复制品"可知，此处表达"在沙发那儿有Sam的一个雕塑复制品"，应用where引导定语从句。故选D。

　　20．A.friend B．enemy

　　C．sofa D．chair

　　答案：A　由上文可知，小猫搂着小狗的雕塑复制品，因此小猫是在和最好的朋友一起睡觉，而不是和敌人、沙发或椅子睡觉。故选A。

　　Ⅱ.阅读理解

　　A

　　I first met Joe Gumps when we were both 9 years old, which is probably the only reason he is one of my best friends. If I had first met Joe as a freshman in high school, we wouldn't even have had the chance to get to know each other.

　　Joe is a day student, but I am a boarding student. We haven't been in the same classes, sports or extracurricular activities. Nevertheless, I spend nearly every weekend at his house, and we talk on the phone every night. This is not to say that we would not have been compatible if we had first met in our freshman year. Rather, we would not have been likely to spend enough time getting to know each other, due to the lack of immediately visible mutual interests.

In fact, to be honest, I struggle even now to think of things we have in common, but maybe that's what makes us enjoy each other's company so much. When I look at my friendship with Joe, I wonder how many people I've known whom I never disliked but simply didn't take the time to get to know. Thanks to Joe, I have realized how little basis there is, for the social divisions that exist in every community.