什么叫硅铁？

．“蹦极”就是跳跃者把一端固定的长弹性绳绑在踝关节等处，从几十米高处跳下的一种极限运动．某人做蹦极运动，所受绳子拉力F的大小随时间t变化的情况如图所示，将蹦极过程近似为在竖直方向的运动，重力加速度为g．由图可知（     ）

A．此人在蹦极过程中的最大加速是g

B．此人在蹦极过程中的最大加速是2g

C．此人在蹦极过程中的加速度始终随时间变化

D．此人在弹性绳拉伸时受到三个力的作用

依次填入下列各句横线处的词语，最恰当的一项是

①某网站的调查结果显示，有三成民众相信会出现“世界末日”，这表明人类对宇宙的认识还很_____________。

②中国是诗的国度，那些千古_____________的诗章作为民族文化的精髓，涵养了一代又一代中国人的心灵。

③两汉以来，很多人在引用《论语》时“断章取义”，不惜_____________《论语》，用自己的学说附会它。

A．肤浅传诵曲解

B．浮浅传诵误解

C．肤浅传颂误解

D．浮浅传颂曲解

当钢筋混凝土柱各边纵向钢筋多于三根时，应设置复合箍筋。( )

第二节：完形填空（共20小题；每小题1.5分，满分30分） 

阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

I was shopping in the supermarket when I heard the young voice. 

"Mom, come here! There's this lady here my ___31___!" 

The mother rushed to her son; then she turned to me to ___32___.

I smiled and told her: "It's okay." Then I talked to the boy, "Hi, I'm Darryl Kramer. How are you?"

He ___33___ me from head to toe, and asked: "Are you a little ___34___? 

"Yes, I have a son," I answered. 

"Why are you so little?" he asked. 

"It's the way I was ___35___," I said. "Some people are little. Some are tall. I'm just not going to grow any bigger." After I answered his other questions, I shook the boy's hand, and left. 

My life as a little person is filled with ___36___ like that. I enjoy talking to children and explaining why I look different from their parents. 

It takes only one glance to see my ___37___. I stand 114 cm tall. I was born a dwarf（侏儒）. ___38___ this, I did all the things other kids did when I was growing up.

I didn't ___39___ how short I was until I started school. Some kids picked on me, calling me names（辱骂我）. Then I knew. I began to ___40___ the first day of school each year. New students would always stare at me as I ___41___ to climb the school bus stairs.  

But I learned to smile and ___42___ the fact that I was going to be ___43___ my whole life. I decided to make my uniqueness an advantage rather than a disadvantage. What I lacked in height, I ___44___ in personality. 

I'm 47 now, and the stares have not ___45___ as I've grown older. People are ___46___ when they see me driving. I try to keep a good attitude. When people are ___47___, I remind myself: "Look what else I have -a great family, nice friends." 

It's the children's questions that make my life ___48___. I enjoy answering their questions. My ___49___ is that, I will encourage them to accept their peers（同龄人）, whatever size and shape they come in, and treat them with ___50___.  

31. A. weight                       B. size                   C. shape                       D. personality 

32. A. scold                         B. explain              C. apologize                 D. Respond

33. A. studied                      B. identified          C. inspected                  D. Checked

34. A. lady                          B. mommy            C. person                      D. kid 

35. A. raised                        B. viewed              C. treated                            D. born 

36. A. stories                       B. pains                 C. stares                       D. Excuses

37. A. shortcomings                 B. strangeness        C. uniqueness                D. Shyness

38. A. Besides                      B. Despite             C. Except                            D. Beyond 

39. A. admit                        B. care                  C. realize                      D. fear 

40. A. hate                           B. tolerate             C. forget                      D. ignore 

41. A. determined                 B. struggled           C. managed                  D. learned 

42. A. refuse                        B. enjoy                C. accept                      D. consider 

43. A. exposed                            B. pitied                C. noticed                     D. Avoided

44. A. made up for               B. ended up with    C. kept track of             D. made use of 

45. A. increased                   B. decreased          C. accumulated             D. changed 

46. A. scared                        B. satisfied            C. amazed                    D. puzzled 

47. A. rude                          B. curious              C. regretful                   D. cruel 

48. A. fantastic                        B. meaningful        C. embarrassing            D. special 

49. A. promise                            B. intention           C. hope                        D. advantage 

50. A. respect                       B. frankness           C. sympathy                 D. emotion 

在组织流水施工时，用来表达流水施工在施工工艺方面进展状态的参数通常包括( )。

A．施工过程和施工段
B．流水节拍和流水强度
C．施工过程和流水强度
D．流水步距和流水强度