20．A.If

　　B．When

　　C．Unless

　　D．Before

　　解析：选B。考查连词。根据前后句的逻辑关系，此句应该强调时间，用when。

　　Ⅱ.完形填空

　　Words：329　难度系数：★★　建议用时：15分钟

　　(2012·大纲版压轴卷)

　　Launching a Life with$10 and a Dream

　　Growing up on a farm in Tennessee，Larry Young was determined to do something else with his life.His father wanted him to follow in his __1__and refused to help Young go to college.__2__ ，with$ 10 in his pocket，Young set off for Tennessee State University，__3__to register.“I walked up to the bursar’s(财务主管) office and threw my two$5 __4__

　　up there on the counter，”Young says.“I plan to make

　　__5__ out of myself.”Young told the school

　　official.He saw this country boy and said, “But you can’t go to school with $10.”Young said, “But I

　　__6__.”Young was taken to see the school dean，who asked if he could drive a truck.Young had never driven before，but said yes

　　__7__.He got a job carrying trash.“I didn’t know what I was doing，but

　　__8__ the grace of God，I did it.That

　　__9__ my tuition，but they didn ’t know I didn’t have a place to stay.”

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