设k是实数，若方程x2k-4-y2k+4=1表示的曲线是双曲线，则k的取值范围为

到2007年欧洲联盟共有多少个成员国？欧洲联盟成立后，这些国家的人民的生活发生了哪些变化？

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BEIJING, March, 17th --The Japanese automaker Toyota will recall some 4,400 units of FJ Cruiser cars in China over seat belt flaws, China's consumer quality watchdog said Saturday.

The General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) said on its website that Toyota China will recall these imported cars produced between December 2007 and March 2013.

Toyota is busy working on the solution to the flaw and will release improvement methods before April 15, according to the administration.

This marks Toyota's second recalling this year after the auto giant announced in January that it would recall 22,869 units of Lexus IS cars in China due to wiper arm problem.

China's private auto ownership reached 93.09 million units by the end of 2012, up 18.3 percent compared with the year before. Along with the fast expanding auto market, Chinese drivers grow more concerned about the quality of their cars.

Also on Saturday, the AQSIQ said in a statement on its website that its research has basically confirmed the German automaker Volkswagen's direct shift gearbox (DSG) transmission has defects which may cause engine power failures and urged Volkswagen to recall defective cars after China Central Television (CCTV) exposed Volkswagen's gearbox defect on Friday.

To better protect the interests of Chinese consumers, the AQSIQ announced late last year that it would formulate a guideline to regulate a recall system for faulty cars.

小题1:What does underlined the word “recall” in the first paragraph probably mean?

A．To ask people to return a product.

B．To bring something into one’s mind.

C．To remember something from the past.

D．To ask someone to go back.小题2:According to the passage, Lexus IS cars were found to have       .

A．seat belt flaws

B．wiper arm problem

C．gearbox defect

D．engine power failure小题3:What is the purpose of regulating a recall system for faulty cars?

A．To limit the sales of imported cars in China.

B．For a better development of national automobile industry of China.

C．In order to show the authority and power of AQSIQ.

D．For a better protection of rights and interests of Chinese consumers.小题4:What was China’s private auto ownership by the end of 2011?

A．About 93 million units.

B．About 110 million units.

C．About 79 million units.

D．About 90 million units.小题5:Which of the following statements is probably NOT true according to the news?

A．Toyota will release its improvements on faulty cars in less than a month.

B．Chinese put more and more focus on the quality of their cars.

C．You may get the information about faulty cars on the website of AQSIQ.

D．It was AQSIQ that first exposed Volkswagen’s DSG defects.

在房地产估价中，广义的建筑物通常包括房屋和构筑物。

(10分)科学家用NaNO₃和Na₂O在一定条件下化合制得晶体A，A由钠离子和某阴离子B构成, 则:

（1）A的化学式为           ，

（2）A对CO₂特别敏感，与CO₂反应相当剧烈，生成两种常见的物质，该反应的化学方程式为：                 ；

（3）此外,科学家还制备了另一种钠盐D，其与A的组成元素完全相同，D中的阴离子与A中的阴离子表观形式相同（元素种类和原子个数均相同），但D中阴离子的结构中含有一个过氧键：-O-O- ，电导实验表明，同条件下其电导能力与NaCl相同，该阴离子的化学式为         ，其与水反应生成过氧化氢的离子方程式为                      ，该反应      （填是或不是）氧化-还原反应

阅读下面的文言文，完成后面题。

杜环，字叔循。其先庐陵人，侍父一元游宦江东，遂家金陵。环尤好学，工书，重然诺，好周人急。

父友兵部主事常允恭，死于九江，家破。其母张氏年六十余，哭九江城下，无所归。有识允恭者，怜其老，告之曰：“今安庆守谭敬先，非允恭友乎？盍往依之？”母如其言，附舟诣谭，。谭谢不纳，母大困。从人至金陵，因访一元家所在，问：“一元今无恙否？”道上人对以：“一元死已久，惟子环存，其家直鹭洲坊中。”

母服破衣，雨行至环家。环方对客坐，见母，大惊，因问曰：“母非常夫人乎，何为而至于此？”母泣告以故。环亦泣，扶就坐，拜之，复呼妻子出拜。妻马氏，解衣更母湿衣，奉麋食母，抱衾寝母。母问其平生所亲厚故人及幼子伯章。环知故人无在者，不足付，又不知伯章存亡，姑慰之曰：“天方雨，雨止为母访之。苟无人事母，环虽贫，独不能奉母乎？愿母无他思。”母见环家贫，雨止，坚欲出问他故人。环令媵女从其行，至暮．果无所遇而返，坐乃定。环购布帛令妻为制表衾。自环以下，皆以母事之。母有痰疾，环亲为烹药，进匕箸。以母故，不敢大声语。

越十年，异地逢其子伯章，泣谓之曰：“太夫人在环家，日夜念少子成疾，不可不早往见。”伯章若无所闻，第日：“吾亦知之，但道远不能至耳。”环归半岁，伯章来。母见少子，相持大哭。既而伯章见母老，恐不能行，竟绐以他事辞去，不复顾。环奉母弥谨。然母愈念伯章，疾顿加，后三年遂卒。环具棺椁殓殡之礼，买地城南钟家山葬之。岁时常祭其墓云。

史官日：交友之道难矣！人当意气相得时，以身相许，若无难事；至事变势穷，不能蹈其所言，而背去多矣！况既死而能养其亲乎？吾观杜环事，虽古所称义烈之士，何以过，而世俗恒谓令人不逮古人，不亦诬天下士人哉！

（节选自宋濂《杜环小传》）

小题1:对下列句子中加点的词的解释，错误的一项是（3分）

A．环尤好学，工书工：擅长

B．盍往依之盍：何不

C．谭谢不纳，母大困谢：推托，推辞

D．环虽贫，独不能奉母乎独：独自小题2:以下各组句子中，直接表明杜环“好周人急”的一组是（3分）

①奉糜食母，抱衾寝母②环知故人无在者，不足付 ③环令媵女从其行，至暮④环虽贫，独不能奉母乎⑤以母故，不敢大声语⑥日夜念少子成疾，不可不早往见

A．①⑤⑥

B．②④③

C．③④⑥

D．①②③小题3:下列对原文有关内容的概括和分析，不正确的一项是(3分)

A．杜环的祖先是庐陵人，他陪父亲杜一元在江东…带过着宦游生活，最后把家安在金陵。杜环特别好学，书法好，重视对别人的承诺。

B．兵部主事常允恭的母亲因家庭变故无处可归，在九江城下哭泣，经人指点后便到金陵找到常允恭的朋友谭敬先，但谭敬先没有收留她。

C．遍寻亲朋来果后，常母就在杜环家中住了下来，虽然家贫，但杜环还是购置布帛让妻子为常母做衣服和被子，常母有病，杜环也亲自为她煮药，照顾周到。

D．常母因思念自己的孩子，病情加重，三年后去世，杜环为她置办棺椁，举行了葬礼，在城南钟家山买了一块地安葬了她，每年还按时给她扫墓。小题4:把文中画横线的句子翻译成现代汉语。（10分）

(1)既而伯章见母老，恐不能行，竟给以他事辞去，不复顾。

(2)至事变势穷，不能蹈其所言，而背去多矣！