26.The director asked me to finish this task by Sunday.How can I ____to?
A.attempt B.manage C.decide D.happen
25.The letter Mary had looked forward to ____her last night and she was very excited.
A.reached B.reaching ' C.had reached D.has reached
24.In the countryside, ____car is not yet ____popular means for transportation.
A./; a B.a; the C.the; / D.the; a
23.The news shocked the whole nation ____a strong earthquake hit Yushu on Apr.14, 2010.
A.what B.when C.that D.which
22.You ____be tired-you have worked only for ten minutes.
A.won't B.mustn't C.needn't D.can't
第一节:单项填空(共l5小题;每小题l分,满分l5分)
从A、B、C、D四个选项中,选出可以填人空白处的最佳选项,并在答题卡上将该项涂黑。
21.-Tom lost his job last week.
-___he is wandering in the street these days.
A.No doubt B.No way C.No wonder D.No problem
22.(本小题满分14分)
已知等差数列的各项均为正数,,前项和为为等比数列,公比;
(1)求与;
(2)求数列的前项和;
(3)记对任意正整数恒成立,求实数的取值范围。
21.(本小题满分12分)
在中,角A,B,C所对的边分别为,且,向量
(1)求的值;
(2)若的面积。