利兴高科技工程有限责任公司是一家上市公司。…自己买卖股票是一般股东的投资行为，也不会

Levey-Jennings质控图中用来确定控制界限的是（）

A.标准差

B.标准误

C.变异系数

D.平均值和标准差

E.极差

下列说法正确的是  (　   　)

A．原子核外电子排布式为1s²的原子与原子核外电子排布式为1s²2s²的原子化学性质

相似

B．Fe^3＋的最外层电子排布式为：3s²3p⁶3d⁵

C．基态铜原子的轨道表示式

D．基态碳原子的轨道表示式

补写出下列名句名篇中的空缺部分。（5题限选4题，8分）

（1）                   ，                    。江娥啼竹素女愁，李凭中国弹箜篌。                                      （《李凭箜篌引》）

（2）                   ，穷岛屿之萦回；桂殿兰宫，                   。

（《滕王阁序》）

（3）悦亲戚之情话，               。农人告余以春及，             。

（陶渊明《归去来兮辞》）

（4）民生各有所乐兮,余独好修以为常。               ，            ？

（屈原《离骚》）

（5）               ，有三秋桂子，十里荷花。羌管弄晴，菱歌泛夜               ，                                                 （柳永《望海潮》）

Mobile phones are an important business tool for farmers in rural areas．But they also put a valuable educational tool in their hands．

The University of Illinois in the United States has a project called SAWBO—Scientific Animations Without Borders．It produces educational videos that can be downloaded to cell phones．The goal is to help people in developing countries improve their lives．

One video shows farmers how to make a natural insecticide from neem seeds to prevent insect damage to crops．The process starts with sorting and drying the neem fruits．Then let the fruit dry in the sun for about three or four days, until they become brown．Using a mortar（碾槌） and stick, the fruits are slightly pounded to remove the shells from the fruits without breaking the seed inside．

The videos use computer animation（动画）．Some of the animated characters are a little funny looking-like a farmer with a long nose．But the subjects are serious, including a health video on preventing cholera（霍乱）．Team member Francisco Seufferheld says the information in the videos is meant to be quickly understood．He says, “The information is digested in such a way that in two minutes, we can transmit a complex idea．”

The researchers tested the seven-minute video on seven mobile phones．They wanted to see if people would share the video using Bluetooth wireless technology．With Bluetooth, files can be passed to a nearby phone even if neither phone is connected to the internet．As a result, in one month, the video had spread to one hundred eighteen people in fifty different villages．" This is just incredible impact," said Francisco Seufferheld．

The team has made a few videos so far．These are available in a total of eighty languages, dialects and accents．Professor Barry Pittendrigh says there are plans for more videos later this year．

小题1:What is the text mainly about?

A．A best-selling mobile phone

B．A valuable educational project for farmers

C．United States support for developing countries

D．A new type of scientist –farmer relationship小题2:The SAWBO program is introduced in order to ____．

A．raise farmers’ standard of living

B．do some research on mobile phones

C．develop farmers’ practical skills

D．help farmers prevent insect damage to crops小题3:The biggest advantage of the program is that it______．

A．includes health video on preventing cholera

B．can be passed to farmers using Bluetooth technology

C．can be used to sort and dry the neem fruits

D．is easy for farmers to understand小题4:Which of the following words can best take the place of the word “ pound” in the 3^rd paragraph?

A．moved

B．beat

C．picked

D．cut

具有自然通风的单层建筑物，所散发的可燃气体密度小于室内空气密度时，宜设置事故（）

A.排风系统

B.送风系统

C.净化系统

D.防爆系统