the current rate, it will

　　not

　　be

　　long

　　before

　　traditional sources become lack.

　　A．Concerning

　　B．Assuming

　　C．Regarding

　　D．Certaining

　　解析　考查固定用法。句意：如果能源需求以目前的速度继续增长，传统能源不久就会匮乏。assuming (that)．..假定……，为固定用法。故选B。

　　答案　B

　　15. I'm sorry to have________you with so many questions on such an occasion.

　　A．affected

　　B．impressed

　　C．bothered

　　D．taken

　　解析　句意：我对在这样一个场合就那么多问题打扰你感到十分抱歉。故选C。

　　答案　C

　　Ⅳ.阅读理解

　　A

　　Research advances over the past decade have told us that, with a little work, we humans can clone just about anything we want, from frogs to monkeys and probably even ourselves！So, we can clone things, but why would we want to？Let's look at some of the reasons people give to justify cloning.

　　1．Cloning for medical purposes

　　Of all the reasons, cloning for medical purposes most probably benefit large numbers of people. Cloning technologies might reduce the time needed to make a transgenic animal model, and the result would be a population of genetically identical animals for study.

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