26. --I’m afraid I can only make a small contribution this time.
--_______. We really appreciate your assistance.
A. The best things come in small package B. The more, the better
C. It is better to give than to receive D. Every little helps
25. The 2010 Shanghai World Exposition ______ with “Better city , Better life” as the theme will be the biggest ever event.
A. being held B. holding C. to be held D. having held
24. --John has got a very good mark in the examination.
-- he looks so happy.
A.No doubt B.No wonder C.No matter D.No good
23. My family was quite poor when I was at college, so I had to ______ for my life as a tutor.
A. fight B. make C. struggle D. survive
22. ______ I admit it is by no means an easy job, I won’t necessarily accept it.
A. As B. As long as C. Since D. While
第一节:语法和词汇(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. Chengdu tops ______ list of “10 happiest cities in” China in ______ survey made recently for its fine scenery, cheap goods and easy lifestyle.
A. the; a B. a. a C. a; the D. the .; the
38.(8分)[物理一物理3一5]
(1)铀裂变的产物之一氪90()是不稳定的,它经过一系列衰变最终成为稳定的锆90(),这些衰变是
A.1次α衰变,6次β衰变 B.4次β衰变
C.2次α衰变 D.2次α衰变,2次β衰变
(2)下雪天,卡车在平直的高速公路上匀速行驶,司机突然发现前方停着一辆故障车,他将刹车踩到底,车轮被抱死,但卡车仍向前滑行,并撞上故障车,且推着它共同滑行了一段距离后停下.已知卡车质量M为故障车质量m的4倍,设卡车与故障车相撞前的速度为v1,两车相撞后的速度变为v2,相撞的时间极短,求v1∶v2的值.
37.(8分)[物理一物理3一4]
(1)某单摆做简谐振动的图象如图所示,则该单摆的摆长 为 ;振动方程为 .
|
(2)如图所示,将刻度尺直立在装满某种透明液体的宽口瓶中(液体未漏出),从刻度尺上A、B两点射出的光线AC和BC在C点被折射和反射后都沿直线CD传播,已知刻度尺上相邻两根长刻度线间的距离为1cm,刻度尺右边缘与宽口瓶右内壁间的距离d=2.5 cm,求瓶内液体的折射率n(可保留根号).
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