A. 松江区2012一模英语初三答案
Part 2 Vocabulary and Grammar
II. 31. B 32. A 33. B 34. B 35. A 36. B 37. C 38. D 39. B 40. C
41. C 42. D 43. A 44. A 45. B 46. D 47. C 48. A 49. B 50. D
III. 51. H 52. F 53. C 54. B 55. G 56. E 57. I 58. A
IV. 59. us 60. teacher 61. easily 62. taller 63. choose 64. wooden 65. success 66. dangerous
V. 67. hasn't, yet 68. Did, send 69. How, long 70. If, don't 71. so, that 72. was, invited 73. when, would
Part 3 Reading and Writing
VI. (A) 74. C 75. C 76. B 77. D 78. D 79. A
(B) 80. C 81. A 82. D 83. C 84. B 85. A
(C) 86. carry 87. loudly 88. news 89. money 90. star 91. other 92. any
(D) 93. It means people don't work in the office but at home.
94. Her job was editing articles for a university.
95. She felt happy.
96. Yes, she did.
97. Because she wasn't going out as much as she did before.
98. Any reasonable answer is ok.
B. （2013松江区一模）如图所示，粗糙程度均匀的绝缘斜面下方O点处有一正点电荷，一带负电的小物体从底端M
A、由题复分析可知，正点电荷对制物体有吸引力，上滑过程中，物体与正点电荷间的距离先减小后增大，电场力先做正功后做负功，摩擦力一直做负功，但不知道电场力和摩擦力做功之和如何变化，所以无法判断机械能的变化情况，故A错误；
B、在下滑过程中，物体与正点电荷间的距离先减小后增大，电场力先做正功后做负功，所以电势能先减小后增大，故B错误；
C、上滑过程中，物体与正点电荷间的距离先减小后增大，由库仑定律得知，小物体受到的电场力先增大后减小，电场力沿垂直于斜面方向的分力也先增大后减小，根据垂直于斜面方向力平衡得知物体所受的支持力先增大后减小，由f=μN知，小物体受到的摩擦力先增大后减小，电场力沿斜面方向先减小后增大，所以无法判断合力的变化情况，所以也不好判断加速度的变化情况，故C错误；
D、设物体上升过程中，摩擦力做功为W．由于OM=ON，M、N两点的电势相等，上升和下滑过程中电场力做功都为0，则根据动能定理得
上升过程：W-mgh=0-
mv12
下滑过程：W+mgh=mv22-0
解得：v2=
C. （2013松江区一模）水上滑梯可简化成如图所示的模型：倾角为θ=37°斜滑道AB和水平滑道BC平滑连接，起点
（1）运动员沿AB下滑时，受力情况如图所示
D. （松江区一模） (C) The new year has come and it is time for those about to graate to look for jo
70题，应该是B啊，穿着strange（奇怪的）dress styles，肯定是negative（消极）啦，不会是positive（积极）
71题，关于内newspaper editor‘ options的话只容有一句： it is unfair for companies to discourage visible tattoos nose rings, or certain dress styles.意思以貌取人不公平。选项A应该是错的，A的观点是author本文作者的观点。我也觉得答案是C。
E. （2013松江区一模）如图所示，一边长L，质量m2=m，电阻为R的正方形导体线框abcd，与一质量为m1=2m的物块
（1）对Q同轴转动：所以线框与物体的速度之比v2：v1=1：2，
由EK＝mv2知：EK1：EK2=8：1
（2）由于线框匀速出磁场，
则对m1有：m1gsinθ-μm1gcosθ=T1，
对m2有：T2=m2g+BIL，
对Q有：T1r1=T2r2
联立并代入数据可得：v＝R＝
（3）电量q=It＝BL | 2
F. 2013届上海市松江区高三英语一模英语作文范文
In the picture, four people are trying to fill a vat with water. Two men are carrying water while two others are pouring water into the vat. However, with so many loopholes at the bottom of the vat, they’ never store any water, because no one tries to mend the holes.
It reminds me of the problems in our study. While studying, we always try to read more books and do more exercises. However, we seldom pay attention to the mistakes we’ve made, nor do we try to correct them. Therefore, “holes” are left. Day by day, the “holes”, or rather the shortages, become more and more. No matter how many books we’ve read, we have never mastered any knowledge. They have leaked out because of the hole.
So we should pay attention to the mistakes we’ve made and the holes we have in our study. Only in this way can we learn much knowledge and fill up our mind with it.
G. （2013松江区一模）如图所示，一质量为m、带电量为-q的小球A，用长为L的绝缘轻杆与固定转动轴O相连接，
（1）轻杆转过90°的过程中，由动能定理：qEL+（-mgL）= m v2-0，
又E=2，得qE=2mg
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