27.-Mr.White didn’t come last night, did he?
-No, we ________for him.A whole night was wasted.
A.waited B.have been waiting
C.were waiting D.had been waiting
26.Praise is like sunlight to the human spirit; without _______ we cannot flower and grow.
A.them B.it C.that D.which
25.He was rejected for the job vacancy because he couldn’t be ______even for the interview.
A.responsible B.beneficial C.punctual D.regular
24.―I’d like a pen which _______ well.
―Will this one _______?
A.writes; do B.writes;work C.is written; do D.is written; work
23.-Do you like cats ?
-Of course .They mean________ a kind of pet to their masters .
A.less than B.more than C.no more than D.not more than
22.―Can you finish the reports today?
―Sure.I’ve _______ half of them already.
A.got away from B.got down to
C.got around D.got through
第一节:单项填空(共15小题,每小题1分,满分15分)
21.My mother asked me to repeat________telephone number________second time so that she could write it down .
A.the ; a B.a ; the C.an; a D.the ; the
22.(本小题满分14分)
如图,已知抛物线:过点F(1,0)作两条互相垂直的弦,AB,CD,设弦AB,CD的中点分别为M,N。
(1)线段MN是否恒过一个定点?如果经过点,试求出它的坐标,如果不经过定点,试说明理由;
(2)求分别以弦AB,CD为直径的两圆公共弦中点的轨迹方程,并说明它表示怎样的曲线。
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