26.-Did Alan enjoy seeing his old friends yesterday? ?
-Yes, he did.He ______ his.Old friends for a long time.
A.didn't see B.hadn’t seen
C.hasn't seen D.wouldn’t see
25.The book will be given to _____ wins the first prize.
A.anyone E.who C.whoever D.whomever
24.I will pay you double if you _____the work finished by Friday.
A.will.get B.get C.got D.are getting
23.Your floor is dirty.It needs _____.
A.cleaning B.to clean C.clean D.cleaned
22.The road is covered with snow.I can't understand they insist on going by motor-bike.
A.when B.why C.whether D.how
第一节:语法和词汇知识(共15小题;每小题1分,满分15分)
从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21.In many places in China, _____ bicycle is still _____ popular means of transportation.
A.a; the B./; a C.the? a D.the; the
22.(本小题满分14分)
设分别是椭圆的左、右焦点,过的直线与E相交于A、B两点,且成等差数列。
(Ⅰ)求;
(Ⅱ)若直线的斜率为1,求的值。
21.(本小题满分12分)
已知函数处都取得极值。
(Ⅰ)求的值;
(Ⅱ)求的单调区间及极大值、极小值。
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