1．质量为m的物体，在距地面h高处以g/3 的加速度由静止竖直下落到地面.下列说法中正确的是
A.物体的重力势能减少mgh
B.物体的动能增加mgh
C.物体的机械能减少mgh
D.重力做功mgh
高考是全社会关注的大事, 学校和家庭表现尤为突出。家庭成员对考生从学习到生活给予无微不至的"关怀", 结果却给考生带来负面影响。根据图画所描述的内容写一篇文章,并发表自己的观点(夹叙夹议)。
注意：
As the College Entrance Examination is drawing near, ________________________________
A very little boy was spending his Saturday morning playing in his sandbox. He had with him a plastic pail(桶) and a shiny, red plastic shovel(铲). In the 36 of creating roads and tunnels in the sand, he 37 a large rock in the middle of the sandbox.
The boy dug around the rock, 38 to move it off the dirt. At first, he wanted to carry it out of the sandbox with his hands; however, it was too heavy. Later, with much 39 , he pushed the rock across the sandbox by 40 his hands. When the boy got the rock to the 41 of the sandbox, he found that he couldn’t roll it up and 42 the little wall. 43 , the little boy pushed, but every time he thought he had made some 44 , the rock tipped(翻滚) and then fell back into the sandbox. The little boy pushed and pushed, but his only 45 was to have the rock roll back.
Finally he 46 tears. All this time the boy’s father watched from his living room window 47 the drama was unfolded. The moment the tears fell, a large 48 appeared across the sandbox. It was the boy’s father. Gently but 49 , he said, “Son, why didn’t you use all the strength that you had?”
Defeated, the boy 50 back, “I did! I did！I used all the strength that I had!”
“No, you didn’t. You didn’t ask me for help.” The father 51 down, picked up the rock and dropped it off the sandbox.
Do you have “rocks” in your life that need to be 52 ? Are you discovering that you don’t have 53 it takes to lift them? There is someone who is willing to give us the 54 we need. Maybe, it’s sometimes a good idea to ask others for 55 when we meet difficulties we can’t overcome.
36. A. method B. step C. practice D. process
37. A. created B. set C. discovered D. brought
38. A. trying B. managing C. deciding D. competing
39. A. thought B. struggle C. movement D. worry
40. A. touching B. shaking C. using D. controlling
41. A. bottom B. center C. edge D. front
42. A. over B. down C. through D. into
43. A. Doubted B. Surprised C. Pleased D. Determined
44. A. attempt B. progress C. effort D. decision
45. A. hope B. reward C. point D. purpose
46. A. made out B. broke out C. burst into D. rushed into
47. A. so B. as C. until D. before
48. A. rock B. picture C. figure D. shade
49. A. surprisingly B. doubtfully C. kindly D. firmly
50. A. shouted B. smiled C. called D. asked
51. A. reached B. looked C. fell D. put
52. A. pushed B. dropped C. carried D. removed
53. A. who B. what C. which D. where
54. A. minds B. spirits C. force D. strength
55. A. help B. tips C. advice D. ideas
35. Everyone thinks he’ll go far in this company because he has all the qualities necessary_________ success.
A. to B. with C. on D. for
mgh