现有m g某气体，它由双原子分子构成，它的摩尔质量为M g/mol．若阿伏加德罗常数的值用N_A表示，则：

（1）该气体的物质的量为　 　mol．

（2）该气体所含原子总数为　 　个．

（3）该气体在标准状况下的体积为　 　L．

（4）该气体溶于1L水中（不考虑反应），形成的溶液溶质的质量分数为　 　．

（5）该气体溶于水形成VL溶液，其溶液的物质的量浓度为　 　mol/L．

The girls jumped up and down and waved their arms abandon.

The houses ________ are for the teachers and the construction work will start soon.

As he sat down to eat, we boys gathered him.

A survey ________ by the UN shows developing countries are particularly attractive to tourists.

下列化学用语的表达错误的是（   ）

设用N_A表示阿伏加德罗常数的值，其计算近似值为6.02×10²³ ， 按要求完成下列填空：

下列叙述正确的是（　　）

The (总统) is paying a private visit to his neighboring country.

—It is reported on TV this morning that a group of college students went on an exploration in Huangshan，________ in the mountain because of their losing the way.

—Yes，I know.Worse still，in order to rescue them，many soldiers went to help，________ one of them to lose his young life.

短文改错。

    It is known to us, a growing outbreak of H1N1 flu has been sparked in many countries. An increasing number of cases are reported every day.

    It's thought that H1N1 flu spread in the same way that regular seasonal influenza viruses do, that is, spreading from person-to-person, mainly through the coughs and sneezes of people who are sick with virus.

    Faced with this severe disease, here are some everyday measure we should take to stay healthy. First, cover your nose and mouth by a tissue when you cough or sneeze. Wash your hands often with soap and water, especial after you cough or sneeze. Avoid touch your eyes, nose or mouth. Germs spread that way. If you get sick, stay home from work and school or limit contact with others to keep from infecting them.

    Finally, H1N1 flu is not a terribly deadly disease, which is curable. So, don't be nervous and just keep calm as usually.

阅读下面的文言文，完成下面小题。

何子平世居会稽，少有志行，见称于乡曲。事母至孝。扬州辟从事史，月俸得白米，辄货市粟麦。人或问曰：“所利无几，何足为烦？”子平曰:“尊老在东，不办常得生米，何心独飨白粲①。”每有赠鲜肴者，若不可寄至其家，则不肯受。母本侧庶，籍②注失实，年未及养，而籍年已满，便去职归家。时镇军将军顾觊之为州上纲，谓曰：“尊上年实未八十，亲故所知。州中差有微禄，当启相留。”子平曰：“公家正取信黄籍，籍年既至，便应扶侍私庭，何容以实年未满，苟冒荣利。且归养之愿，又切微情。”觊之又劝令以母老求县，子平曰：“实未及养，何假以希禄？”觊之益重之。既归家，竭身运力，以给供养。末除吴郡海虞令，县禄唯以养母一身，而妻子不犯一毫。人或疑其俭薄，子平曰“希禄本在养亲，不在为己。”问者惭而退。母丧丢官，哀毁逾礼，每至哭踊，顿绝方苏。

(《宋书孝义传》)

（注）①白粲：白米。②籍：户口册,即下文的“黄籍”。当时规定，官员父母年满八十，应解职归家奉养。

写出下列有机物的结构简式或者名称：

It's true that everyone loves a mystery, ___________ when mixes history with fiction. That's why" The Da Vinci Code" is so popular.

The (敏感的) man finally made a sensible decision, which shocked everyone present。

求椭圆 在矩阵 对应的变换作用下所得曲线 的方程.

如图是常见四种有机物的比例模型示意图.下列说法正确的是   （   ）

标准状况下，体积相同的下列气体，其质量最大的是（   ）

相同条件下，ag的A气体与bg的B气体占有相同体积。下列叙述错误的是 (   )

阅读理解

    A man walked into a small Irish pub and ordered three beers. Bartender was surprised, but he served that man three beers. One hour later the man ordered three beers again. The very next day that man ordered three beers again and drank quietly at a table. This repeated several times and shortly after the people of the town were whispering about the man, who was ordering three beers at once.

    A couple of weeks later, the bartender decided to clear this out and inquired: “I do not want to pry, but could you explain, why do you order three beers all the time?” The man replied: “It seems strange, isn't it? You see, my two brothers live abroad at the moment, one – in France and another – in Italy. We have made an agreement, that every time we go to pub each of us will order extra two beers and it will help keeping up the family bond”.

    Soon all the town have heard about the man's answer and liked it a lot. The man became a local celebrity. Residents of the town were telling this story to newcomers or tourists and even invited them to that pub to look at Three Beer Man.

    However, one day the man came to pub and ordered only two beers, not three as usual. The bartender served him with bad feeling. All that evening the man ordered and drank only two beers. The very next day all the town was talking about this news, some people pray for the soul of one of the brothers, others quietly grieve.

    When the man came to pub the next time and ordered two beers again, the bartender asked him: “I would like to offer condolences to you, due to the death of your dear brother”. The man considered this for a moment and then replied: “Oh, you are probably surprised that I order only two beers now? Well, my two brothers are alive and well. It's just because of my decision. I promised myself to give up drinking.”