先化简，再求值．4x2y-[6xy-2（4xy-2）-x2y]+1，其中x=-1

If you have a problem with speaking, you can do several things. Listen to English as much as possible. You can learn a poem(诗) or a song by heart. You can also learn more dialogues（对话）. And practice speaking with your friends as much as you can.

Many people find it difficult to listen to English. The answer is to listen as much as you can. However, don’t do too much at one time. It is better to practice listening for five minutes every day. Don’t sit down and listen for an hour at a time. That’s too much! Do choose listening passages that are interesting and not too difficult. Choose（选择） tapes（磁带） on which the people speak clearly and not too fast. Take it easy， at first. Success with simple tapes at the beginning is the answer. Later on you can practice with tapes that are more difficult.

Finally, how can you learn to write well? How do you use little words like in, on, of and for? There are two answers to this. First, do some study with new words. Keep a list of verbs like look for, look after and so on. Second, read as much English as possible. There are many things that can’t be learnt. You must see them in books many times. Then you’ll be able to use them correctly(正确地) yourself. So, in order to write well, you must first learn to read much.

小题1:This passage is about English ______ .

A．spelling, listening, grammar and reading

B．listening, speaking, reading and writing

C．taking exams, pronunciation, reading and writing

D．pronunciation, reading, listening and writing小题2:If you ______ , you can speak well.

A．learn more dialogues

B．learn a poem or a song by heart

C．practice speaking with your friends as much as you can

D．all above小题3:Which of the following is right according to the passage?

A．It’s better to listen to English for a long time every day.

B．At the beginning, you’d better choose the tapes on which the people speak quickly.

C．At first you should begin with simple tapes for listening.

D．Few people think it hard to listen to English.小题4:Which of the following ways can help you to improve（提高） your written English? 

A. Buy books of writing practice.        B. Read as much as possible.

C. Do some study with new words.      D. Both B and C.

小题5:Which of the following is not right according to the passage?

A．Many people find it difficult to listen to English.

B．Sit down and listen for an hour at a time.

C．Learn a poem or a song by heart can improve your speaking.

D．To improve speaking, you can practice speaking with your friends as much as you can.

阅读下面的文字，完成1－4题。

　　①每个从山村走向都市的人，大概都有一个如梦如幻的村庄记忆，也有一个关于“老屋”的深深的情结。因为它不仅仅包裹着我们的童年、少年甚至青年时光，还成为我们这些远走天涯的游子生命的根系。

　　②每次回到生养自己的村庄，都有一种莫名的酸楚和愧疚涌上心头。原来记忆中的村庄和老屋渐渐被新房代替，所剩下的也多颓败与凋零，一如秋后的残荷与落叶，在风中悲壮地摇曳。我已找不到自己的根脉，也挽不住逝去的岁月！上小学时必经的一条转弯抹角的胡同虽在，但已面目全非，颓败、肮脏一览无余，永远失去了原来的严整、净洁、古朴和神秘，现在连一个神奇的故事也隐藏不住了。

　　③还有童年的井、童年的河、童年的树、童年的鹅、童年的麦田和童年的菜园，现在都已失去了踪影。记得村边曾有一个大河湾，这是全村的鸭与鹅的天堂。每当清晨阳光洒满村庄，可爱的鸡、鸭、鹅、狗蜂拥而出，鸡们寻找自己的玩伴或飞上草垛引吭高歌，狗们追逐友伴或吠天叫日，鸭与鹅们纷纷迈着骄傲的步伐向池湾奔去。鸭子左右摇晃，步态憨厚拙笨，常因急切弄翻了自己；而鹅们则大为不同，它们头颈高昂、步履轻盈、声音清扬，是动物中的君子，真有气宇轩昂、国色天香和超凡脱俗之姿，令人叹为观止！如今村庄中的河湾枯了，鸭与鹅也看不到了，只剩下了日夜的鸡犬不宁与鸡飞狗跳。

　　④我家的老屋早已拆除，并盖上了新房，现在再也找不到原来的形象。由于缺乏先见之明，当时就连一张照片也没能留下，这令我一直耿耿于怀和惴惴不安，因为老屋寄托着我的童年、少年、青年生活，也包裹着爷爷、奶奶、父亲、母亲，以及兄弟姐姐共同生活的岁月，我唯恐一不小心将这些记忆丢失，以后就再也找不回老屋了。我曾想自己为“老屋”画一幅画，但因画技不佳迟迟没有动笔；我曾寄望于儿子，让他好好学画，将来有一天让他将我的记忆画下来，但那又是遥遥无期和不能指望的事情，因为儿子画技再高，他能画出我记忆的海水情深吗？于是，我决定用文章将老屋描绘出来，哪怕是一个简单的轮廓也好！

　　⑤母亲曾告诉我们兄弟姐妹说：“以后你们可别忘了小舅，是他一砖一瓦一草一木用小驴驮料，帮咱家盖起南屋的。”母亲和小舅早已离世，但母亲的话、小舅的身影却活在我的心中。1979年至1982年高考这四年，假期期间我一个人曾住过这个南屋。当时整个房间虽杂乱无章，但我用白纸将土炕上的破席糊好，坐在一只盛草的高大的竹笼之上，伏在一张大高桌上，面对南窗复习课程，虽然诵书的声音有几分悲情，但南来的风与窗外菜园里散发的清香沁人心脾！在三次高考名落孙山后，第四年我能够成功，这个南屋所给予我的不仅是宁静的时空，还有忍受孤独和寂寞的心性与决心，更有南来的和煦之风与花之芬芳！

　　⑥至今，我手中没有一个老村与老屋的物件，所有的只是发黄的记忆！而且，近些年老村、老家的老旧之物越来越少，这是令人懊丧之事！好在心灵的底片上，许多记忆犹新，仿佛雨过天晴菜园里沾满露水的花朵，我要早些用笔将它们留住，尤其是那些感动过我、对我的成长和心灵有益的人与事！

　　⑦随着时光的流逝，老村和老屋像凋零的花瓣一样纷纷剥落，而我却像清明时节忆起已故的亲人般将它想起，并给予它以热烈而平淡、激动而冷静、亲近而遥远的祭奠，用我这个远方游子的一片素心和一夜清梦。

1．第二段画线句在文中的作用是什么？

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2．请分析第三段在艺术表现上有哪些特色？

____________________________________________________

3．请结合全文具体分析作者对村庄、老屋的深深情结，其中有哪些复杂的情感？

____________________________________________________

4．第⑥段中作者说“许多记忆犹新，仿佛雨过天晴菜园里沾满露水的花朵”，而在第⑦段中作者又说“随着时光的流逝，老村和老屋像凋零的花瓣一样纷纷剥落”，二者是否矛盾，为什么？

____________________________________________________

休克时微循环代偿期（缺血期）的主要表现是（）

A.毛细血管前阻力增加和毛细血管后阻力增加

B.微动脉、微静脉和毛细血管前括约肌收缩，血液主要通过直捷通路或动静脉短路回流

C.微血管扩张，微动静脉间分支开放导致毛细血管扩张，血液淤滞，血流速度缓慢

D.血流缓慢及促凝因素导致血管内凝血，进一步加重组织缺血、缺氧

E.微静脉和毛细血管通透性增高，使血浆大分子或红细胞渗出

非法获取军事秘密罪

关于点火过迟的原因，甲认为是由于断电器触点间隙过小，乙认为是由于断电器触点间隙过大，丙认为是由于断电器触点间隙合适（）你认为。

A.甲对

B.乙对

C.丙对

D.甲、乙、丙都不对