24. Although they plant trees in this area every year, the tops of hills are still ______.
A .blank B. hollow C. vacant D. bare
23. People have heard _______ the President has said; they are waiting to see _______ he will do.
A. how, how B. what, what
C. when, how D. that, what
22. -How do you like the food in this restaurant?
-Oh, _______. We couldn’t have found a worse place.
A. too bad B. sorry
C. wonderful D. impossible
第一节 单项填空(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。
21. -Do you know ______ English for “帅哥”?
-I’m afraid I don’t. I’m not interested in _______ English language.
A. the, the B. the, 不填
C. 不填, the D. 不填, 不填
第三节 短文填空(共5个空;每空1 分,满分5分)
听下面一篇短文。根据短文内容填空,每空一词。短文读两遍。把答案填在第II卷相应位置。
MARCH 9, 2010 is a day that I will remember for the rest of my life. It was 16 Day. But I was too busy hanging out with my friends to even send my mom a message. She called to
17 me to eat something nice and keep 18 in school. I felt ashamed. My mom never thinks about herself but has 19 on me all these years. I am determined to work harder to create a better life for her in the future. I believe that love is an important part of our short life. It’s mother who teaches it to us. I 20 my mother.
20.
(16分)钚的放射性同位素
静止时衰变为铀核激发态
和
粒子,而铀核激发态
立即衰变为铀核
,并放出能量为
的
光子。已知:
、
和
粒子的质量分别为
、
和
![]()
(1)写出衰变方程;
(2)已知衰变放出的光子的动量可忽略,求
粒子的动能。
焦作市2009-2010学年(下)选修模块(3-5)水平测试
19.
(4分)质量相等的A、B两球在光滑水平面上沿同一直线、向同一方向运动, A球的动量为7 kg·m/s, B球的动量为 5
kg·m/s, 当A球追上B球发生碰撞后, A、B两球的动量可能为 ( )
A. pA=6 kg·m/s pB=6 kg·m/s B. pA=3 kg·m/s pB=9 kg·m/s
C. pA=-2 kg·m/s pB=14 kg·m/s D. pA=-4 kg·m/s pB=16 kg·m/s
18.
(12分)如图所示,一质量为M的物块静止在桌面边缘,桌面离水平地面的高度为h。一质量为m的子弹以水平速度v0射入物块后,以水平速度v0/2射出。重力加速度为g。求
(1)子弹穿过物块后物块的速度V;
(2)此过程中系统损失的机械能;
(3)此后物块落地点离桌面边缘的水平距离。
附加题(建议重点高中或理科优秀的学生作答。各学校可根据本校实际情况酌情算分。)[
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com