问题 改错题

第 II卷 (两部分,共35分)

第一部分:短文改错(共10小题,每小题1分,共10分)

This afternoon Li Hua was seated under a big tree, looked unhappy, I went up to ask that made him so unhappy. He told me that a classmate of his troubled him a lots. Sometimes when Li Hua was listening to attentively in class,the classmate patted him on his shoulder,that annoyed Li Hua. He talked about it with the classmate, but it doesn’t work. Not know how to solve the problem, he was wondering whether he should tell the teacher about it, I suggested that he turned to the teacher help, but he was afraid that if he did so, the calssmate would hate him.

答案

This afternoon Li Hua was seated under a big tree, looked unhappy, I went

looking          

up to ask that made him so unhappy. He told me that a classmate of his

what          

troubled him a lots. Sometimes when Li Hua was listening to attentively in

lot                                      去掉             

class,the classmate patted him on his shoulder,that annoyed Li Hua. He

the           which             

talked about it with the classmate, but it doesn’t work. Not know how to

didn't             knowing                

solve the problem, he was wondering whether he should tell the teacher

about it, I suggested that he turned to the teacher help, but he was

turn                前加for                

afraid that if he did so, the calssmate would hate him.

单项选择题

桥是种固定建筑物,一经造成,便屹立大地,可以千载不移,把它当作地面标志,应当是再准确不过的.《史记·苏秦列传》里有段故事:“尾生(人名)与女子期于梁下,女子不来,水至不去,抱柱而死.”他们所以约定在桥下相会,就因为桥是不会动的,但是,这里所谓不动,是指大动而言,至于小动、微动,它却和万物一样,是持续不断、分秒不停的.车在桥上过,它的重量就使桥身变形,从平直的桥身变为弯曲的桥身,就同人坐在板凳上,把板凳坐弯一样.板凳的腿,因为板的压迫,也要变形,如果这腿是有弹簧的,就可看出,这腿是被压短了.桥身的两头是桥墩,桥上不断行车,桥墩就像凳腿一样,也要被压短而变形.把板凳放到泥土上,坐上人,板凳腿就把人的重量传到泥土中,使泥土发生变形.桥墩也同样使下面的基础变形.桥身的变形表示桥上的重量传递给桥墩了,桥墩的变形表示桥身上的重量传递给基础了,基础的变形表示桥墩上的重量传递给桥下的土地了,桥上的重量终为地下的抵抗所平衡.物体所以能变形,是由于内部分子的位置有变动,也就是由于分子的运动.车在桥上高速行驶时,使桥梁整体发生震动.此外,桥还受气候变化的侵袭.在狂风暴雨中,桥是要摆动或扭动的;就是在冷暖不均,温度有升降时,桥也要伸缩,形成蠕动.桥墩在水中,经常受水流的压迫和风浪的打击,就有摇动、转动和滑动的倾向而在地基中发生移动.此外,遇到地震,桥还会受到水平方向和由下而上的推动.所有以上种种的动而引起的桥的变形,加上桥上重量和桥本身重量所引起的变形,构成全桥各部的总变形.任何一点的变形,都是那里的分子运动的综合表现.桥是固定建筑物,所谓固定就是不在空间有走动,不像车船行走.但是,天地间没有完全固定的东西,桥的平衡只能是瞬间现象,它仍是桥的运动的一种特殊状态.桥的运动是桥的存在形式.

文中用“人坐板凳”的比喻,要说明的一项是_____.

A.桥是有一定承载量的,超过承载量就要引起变形

B.建筑桥梁要保证质量,所以材料要符合科学的弹性系数

C.车在桥上驶过时,桥上的一切重量逐层传递到桥下土地中

D.桥像板凳,桥墩像板凳腿,所以桥能承重

问答题 简答题