A. 松江區2012一模英語初三答案
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松江區一模)如圖所示,粗糙程度均勻的絕緣斜面下方O點處有一正點電荷,一帶負電的小物體從底端M
A、由題復分析可知,正點電荷對制物體有吸引力,上滑過程中,物體與正點電荷間的距離先減小後增大,電場力先做正功後做負功,摩擦力一直做負功,但不知道電場力和摩擦力做功之和如何變化,所以無法判斷機械能的變化情況,故A錯誤;
B、在下滑過程中,物體與正點電荷間的距離先減小後增大,電場力先做正功後做負功,所以電勢能先減小後增大,故B錯誤;
C、上滑過程中,物體與正點電荷間的距離先減小後增大,由庫侖定律得知,小物體受到的電場力先增大後減小,電場力沿垂直於斜面方向的分力也先增大後減小,根據垂直於斜面方向力平衡得知物體所受的支持力先增大後減小,由f=μN知,小物體受到的摩擦力先增大後減小,電場力沿斜面方向先減小後增大,所以無法判斷合力的變化情況,所以也不好判斷加速度的變化情況,故C錯誤;
D、設物體上升過程中,摩擦力做功為W.由於OM=ON,M、N兩點的電勢相等,上升和下滑過程中電場力做功都為0,則根據動能定理得
上升過程:W-mgh=0-
mv12
下滑過程:W+mgh=mv22-0
解得:v2=
C. (2013松江區一模)水上滑梯可簡化成如圖所示的模型:傾角為θ=37°斜滑道AB和水平滑道BC平滑連接,起點
(1)運動員沿AB下滑時,受力情況如圖所示
D. (松江區一模) (C) The new year has come and it is time for those about to graate to look for jo
70題,應該是B啊,穿著strange(奇怪的)dress styles,肯定是negative(消極)啦,不會是positive(積極) 71題,關於內newspaper editor『 options的話只容有一句: it is unfair for companies to discourage visible tattoos nose rings, or certain dress styles.意思以貌取人不公平。選項A應該是錯的,A的觀點是author本文作者的觀點。我也覺得答案是C。
E. (2013松江區一模)如圖所示,一邊長L,質量m2=m,電阻為R的正方形導體線框abcd,與一質量為m1=2m的物塊
(1)對Q同軸轉動:所以線框與物體的速度之比v2:v1=1:2, 由EK=mv2知:EK1:EK2=8:1 (2)由於線框勻速出磁場, 則對m1有:m1gsinθ-μm1gcosθ=T1, 對m2有:T2=m2g+BIL, 對Q有:T1r1=T2r2 聯立並代入數據可得:v=R= (3)電量q=It=BL | 2
F. 2013屆上海市松江區高三英語一模英語作文範文
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松江區一模)如圖所示,一質量為m、帶電量為-q的小球A,用長為L的絕緣輕桿與固定轉動軸O相連接,
(1)輕桿轉過90°的過程中,由動能定理:qEL+(-mgL)= m v2-0, 又E=2,得qE=2mg
與2013松江英語一模聽力相關的資料
熱點內容
影院容納量
發布:2024-08-19 07:18:47
瀏覽:746
八百電影
發布:2024-08-19 07:13:46
瀏覽:844
歐美愛情電影網
發布:2024-08-19 06:11:49
瀏覽:515
|
|
|