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：

1. 词数：120左右
2. 文章的开头已写好，不计入总词数。

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