初产妇，29岁，妊娠36周， * * 流水4小时。妇检： * * 少量流水，色清，pH值>7，宫

如图所示，足够长传送带与水平方向的倾角为θ，物块a通过平行于传送带的轻绳跨过光滑轻滑轮与物块b相连，b的质量为m，开始时a、b及传送带均静止，且a不受传送带摩擦力作用，现让传送带逆时针匀速转动，则在b上升h高度（未与滑轮相碰）过程中

A．物块a重力势能减少mgh

B．摩擦力对a做的功大于a机械能的增加

C．摩擦力对a做的功小于物块a、b动能增加之和

D．任意时刻.重力对a、b做功的瞬时功率大小相等

(2012·天津)阅读下面的文字，完成文后题目。

掐辫子

刘心武

她听到这儿放心了，明白他内心里，有区别于她这样城里生城里长的人的眼光和心思，草帽对她来说，不过是一种便宜的遮阳物品。可是对他来说，是他到城里来上大学以前，奶奶、妈妈、姐姐日常掐辫子变化成的产品。她引他聊得更多。他细细叙说。他告诉她，他们家乡，离交通枢纽远，历史上属于兵家必弃之地，如今则属于商家缓争之处，无山无水，开发不成旅游区，离最近的一处古迹也有百里之遥。他也曾苦苦查阅过，竟找不出自古到今各方面的名人有出生在他们那个地方的。总之，那是一处平凡、平淡、平庸的所在。但是平实之地也有平安之福，城市化的浸润离得还远，村庄虽然盖起了新房，却仍有古朴风貌。有人问城市膨胀耕地减少，为什么还有粮食吃？他说，那就是因为还有他家乡那样的存在，每年还种大片的小麦，小麦收过种大片的玉米。而大田劳作之余，妇女们就维系着久远的传统，掐辫子。

她在秋阳下听他讲家乡，心里仿佛陆续注入一缕一缕的光亮。他没想到她爱听这些。他进一步告诉她，他大学四年的费用，学费是爸爸供，生活费呢，全是奶奶、妈妈和姐姐掐辫子掐出来的。她把玩着那渐渐变干的草帽，忽然觉得，那是有生命的东西，她把草帽像宠物般拥在胸怀。                                                              (节选)

你如何理解“心里仿佛陆续注入一缕一缕的光亮”这句话？

答：________________________________________________________________________

某校邀请一学者做报告，报告主题如图海报。下列各项不可能出现在海报上“内容”一栏的是

A．英国国家元首首相与美国国家元首总统所拥有政治权力的异同

B．英国君主立宪制确立后统治方式的变化

C．美国分权制衡如何有效预防专制

D．英国君主立宪制的完善与发展

In every British town, large and small, you will find shops that sell second-hand goods. Sometimes such shops deal mostly in furniture, sometimes in books, sometimes in ornaments (装饰) and household goods, sometimes even in clothes.

　The furniture may often be "antique", and it may well have changed hands many times. It may also be very valuable, although the most valuable piece will usually go to the London salerooms, where one piece might well be sold for hundreds of thousands of pounds. As you look around these shops and see the polished wood of chests and tables, you cannot help thinking of those long-dead hands which polished that wood, of those now-closed eyes which once looked at these pieces with love.

　The books, too, may be antique and very precious; some may be rare first printings. Often when someone dies or has to move house, his books may all be sold, so that sometimes you may find whole libraries in one shop. On the border between England and Wales, there is a town which has become a huge bookshop as well. Even the cinema and castle have been taken over, and now books have replaced sheep as the town's main trade.

　There are also much more humble shops, sometimes simply called "junk shops", where you can buy small household pieces very cheaply. Sometimes the profits (利润) from these shops go to charity(慈善事业). Even these pieces, though, can make you feel sad; you think of those people who once treasured them, but who have moved on to another country or to death.

　Although the British do not worship(崇拜) their ancestors, they do treasure the past and the things of the past. This is true of houses as well. These days no one knocks them down; they are rebuilt until they are often better than new. In Britain, people do not buy something just because it is new. Old things are treasured for their proven worth; new things have to prove themselves before they are accepted.

57．Books found in second-hand book shops may_________.

　　A．be copies of the earliest printings    B．be on sale for the first time

C．never be worth very much          D．never be rare

58．Second-hand goods sometimes fill you with sadness because_________.

　　A．they are too expensive for average buyers

　　B．they remind you of the original owners

　　C．they are now forgotten

　　D．they are sold for charity

59．The average British person ___________.

　　A．does not respect old things because they are not fashionable

B．likes to build new houses simply because it is fashionable to do so

C．likes to buy new things because they are fashionable

　　D．does not like to buy things simply because they are fashionable

缺失者，义齿的支点线形式为（）

A．直线式

B．斜线式

C．横线式

D．纵线式

E．平面式