公共卫生事件仍然威胁着群众的生命和健康，主要表现有（）. A.新发传染病和人畜共患病

“冷战”结束以后，以法德为核心的欧洲国家联合进一步扩大。对“欧盟”的表述不正确的是[ ]

A．是所有国家参加的经济政治联盟

B．由欧洲共同体发展而来的

C．是区域经济集团化的典型代表

D．欧盟的发展促进了世界经济多极化格局的形成

阅读下列材料

材料一 秦始皇在咸阳宫举行的一次庆功宴上对群臣说：“天下共苦，战斗不休，以有诸侯”。                                           ——《史记?秦始皇本纪》

材料二 汉高祖把子弟分封到外地做诸侯王，目的是让他们镇守四海，拱卫天子。可是随着时间的推移，有的诸侯王逐渐在封国内各自为政，不听天子诏令，出入公然使用天子礼仪车驾，时刻图谋举兵夺取皇位。                ——引自教材

请回答：

（1）从材料一中看出，秦始皇认为春秋战国以来，天下战争不断的根源在于西周实行的什么制度？（1分） 基于以上认识，秦始皇实行了什么制度来加强对地方的控制？（1分）

（2）材料二反映了西汉时期国家出现了什么问题？（2分）

（3）汉武帝是如何解决这一问题的？（2分）汉武帝这一措施巧妙在哪里？（2分）

水是宝贵的自然资源。

（1）无论是自来水还是纯净水，保持水的化学性质的最小粒子是_____________。

（2）同学们对水进行研究，进行了下列实验，其中能确定水由氢元素和氧元素组成的是__（填字母）。 A．水的蒸发B．水的电解C．水的蒸馏D．水的吸附

（3）下图为电解水的实验装置，检验b管中气体的方法是___________________。

（4）科学家还用点燃氢气，证明燃烧产物的方法，证实了水的组成。小明用下图所示装置进行实验，氢气燃烧的化学方程式为_______________________，U型管中氧化钙的作用是____________，实验过程中可以观察到的现象是____________。

       Many parents who welcome the idea of turning off the TV and spending more time with the family are still worried that without TV they would be too often on call as entertainers（娱乐者） for their children．They remember thinking up all sorts of things to do when they were children．But their own children seem different, less good at finding things to pass the time, somehow．When there’s nothing to do, these parents notice regretfully that their children seem unable to come up with anything to do besides turning on the TV．

One father, for example, says, “When I was young, we were always thinking up things to do, projects and games．We certainly never complained in an angry way to our parents, ‘I have nothing to do”．He compares this with his own children today: “They are simply lazy．If someone doesn’t play with them, they’ll happily sit there watching TV all day．”

There is one word for this father’s disappointment: unfair．It is as if he were disappointed in them for not reading Greek though they have never studied the language．He feels his children’s lack of inventiveness a great pity, as if the ability to play were something born that his children are missing．In fact, the tendency（倾向） to play is built into the human species, but the actual ability to play—to imagine, to invent in a playful way, and the ability to gain satisfaction after successful effort from it—these are skills that have to be learned and developed．

Such disappointment, however, is not only unjust, it is also destructive（毁灭性的）．Sensing their parents’ disappointment, children come to believe that they are, indeed, lacking something, and that this makes them less worthy of admiration and respect．Giving children the chance to develop new things to enjoy themselves, to enrich their knowledge and experience and discover the pleasure of doing things on their own is, on the other hand, a way to help children develop a confident（自信）feeling about themselves as able and interesting people．

小题1:Many people think that, instead of watching a lot of TV, their children should_______．

A．think up things to enjoy themselves

B．find chances to talk with parents

C．enjoy themselves outdoors

D．sit silently studying Greek小题2:Fathers often blame their children for not being able to play by themselves．This is unfair because________．

A．they do not lack the ability to play

B．they have not been given the opportunities to learn and develop their ability

C．the children are too young to do that

D．the children are not really lazy, but there’s nothing for them to do小题3:When parents show continuous disappointment in their children, the children will________．

A．be more disappointed

B．refuse to learn new things

C．discover the pleasures of doing things on their own

D．lose their confidence and respectability小题4:What is the author’s main idea?

A．Parents should give children more help on how to be inventive．

B．Turning off the TV will help us solve a lot of family problems．

C．It’s not right for parents and children to blame（抱怨） each other．

D．Today’s children are becoming less able and independent than before．

干式电抗器竣工（预）验收标准要求三相水平安装的电抗器间最小中心距离不应低于电抗器外径的（）倍。

A.1.8

B.1.9

C.2

D.1.7