误差可分为误差的大小和方向都不固定，绝对值大的误差出现的概率小，绝对值小的误差出现的

在文中横线处填入下列语句，衔接最恰当的一项是（3分）

古往今来的画家，可谓恒河沙数，不可胜计，可大致分为三类：第一类，画社会认为最好的画；第二类，       ；第三类，       。第一类人，       ；第二类人，       ；第三类人，与道合而为一，“其人若天之自高，地之自厚，日月之自明”。他的艺术       ，       。

①“朝闻道夕死可矣”　 ②置好坏于度外，受冥顽不朽的力量驱动作画③终身勤于斯而不闻道④世俗形骸消亡之日，正是他的艺术走向永恒之时⑤画自己认为最好的画⑥就是天然本真的生命

A．①④⑤②⑥③

B．①④⑤②③⑥

C．⑤②③①⑥④

D．⑤②①③④⑥

The news that China bans time-travel TV dramas and movies got a lot of attention on the internet. Yet, time travel in China is a bit different from time travel in common sense．It is anything but science fiction and always goes backwards in time．There is minimum imagination involved--no ever-ending circles that mess up present and future, no advanced technology, no new social orders or new human forms from the twenty--whatever century, everything is a known historical fact when you travel through in China．

It is not even called time travel; rather the Chinese people refer it as time crossover．Time crossover has been an extremely popular theme for online novels for years(in fact , it is an indispensible part of China’s online culture), and didn’t get picked up by TV and the big screen until recent two years．Most of time-travel dramas and movies are adapted from popular online novels and like in other cases adaptations are never better than the original books．

The main plot of time-travel novels or TV dramas can be very well summarized in one sentence: from nobody to somebody．Time travel in China is more about escaping from the reality than about realizing wild dreams．

In China , there is no need of time machine either．People travel backwards in time via the possession of antiques presence at historical places of interest encounter of life-threatening accidents or simple a look into the mirror．Some time-travel novels even start with “I wanted to go back to history so much that one morning when I opened my eyes I was back．” Technology is not relevant at all．

Though China is not short of histories to go back to, people have their own preferences and it is pretty much a gender （性别）thing．If the main character is male then he usually goes back to special times in history when he is able to help build up or tear up a dynasty．A typical example is A Step Into the Past(寻秦记), the first time-travel TV drama in China, which tells the story of how a SWAT member helps to unite China and build up Qin Dynasty ．

On the other hand , female characters primarily go back to Qing Dynasty partly because Qing Dynasty has the most number of princes to fall in love with．Yongzheng Emperor is the favorite．As can be seen in Startling by Each Step（步步惊心）, a Qing time crossover classic, a girl goes back to Qing Dynasty and falls in love with Yongzheng Emperor and his brothers．

小题1:As for time travel in China, which of the following ideas does the writer agree to ?

A．it is complicated and can be classified into science fiction.

B．it is often based on the familiar story in history.

C．it sometimes messes up the times and social orders.

D．it always occurs in any times but the time before.小题2:The writing purpose of this passage is to           .

A．analyze why the time -travel TV dramas are banned in China

B．introduce the characteristics of the time-travel TV dramas in China

C．show the difference between time travel in China and in other cultures

D．advise people to watch the time-travel TV dramas in China小题3:It can be inferred from the passage that          .

A．China now has banned any forms of productions about time travel

B．adapted from online novels, time-travel TV and movie productions enjoy more praise

C．the main character always follows a set pattern in the time-travel TV dramas in China

D．all the time-travel productions are about heroes and their success小题4:The news mentioned in the very beginning is intended to         .

A．prove author’s view

B．introduce the topic

C．give an example

D．work as a topic sentence

2010年3月5日至16日，十一届全国人大三次会议在人民大会堂召开。参加本次会议的有全国各族人民代表 2939 人，大会表决通过了《政府工作报告》、《最高人民法院工作报告》《最高人民检察院报告》。在民主讨论的基础上，大会审议了《中华人民共和国全国人民代表大会和地方各级人民代表大会选举法修正案（草案）》。

（1）结合上述材料，说明我国的人民代表大会制度是怎样保证人民当家作主的权利的？

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

（2）假如你是本届人大会议的新闻发言人，你将如何向采访本次会议的800多名外国记者介绍我国为什么实行这一根本政治制度？

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

HIV的传播途径不包括（）。

A.血液传播

B.空气传播

C.破损的皮肤黏膜

D.性传播

E.母婴垂直传播

植物学家对阿尔卑斯山脉的植被考察之后，发现了一个奇怪现象：最近100年来，许多高山上的植物品种正在增加，许多山底牧场上开放的花已经开到了海拔2000米的高山雪带上，而原先雪带上的植物则超过雪带向更高处攀登。植物学家研究了有关科学文献发现，造成这种情况的主要原因是阿尔卑斯山地区的气温逐渐升高，这些适宜在低气温环境里生长的植物为了寻找适宜的温度，不得不向更高的山上“攀登”。植物学家还发现，它们的生命力要比以前还强盛得多。 这段文字意在说明( )。

A．许多植物自身都有对自然界灵敏的反应，并且不断调整自身的生存状态

B．阿尔卑斯山地区的气温正在逐渐升高，导致植物发生变化

C．高山上的植物品种正在增加，而且生命力强盛

D．阿尔卑斯山脉的植被出现奇怪现象