健身性健美操的动作简单，实用性强，（），并均以对称的形式出现。A.音乐速度较慢，动作

下图是某同学设计的实验室制取二氧化碳并验证其性质的实验装置图。                                             

请回答下列问题：

（1）将A、E装置连接时，应将A装置的导管a与E装置的导管   （选填“b”或“c”）相连接。检验E装置中二氧化碳已收集满的方法是                                 。

（2）将A、B装置连接，观察到的现象是                                           ，可验证二氧化碳的性质是                                                       。

（3）将A、C装置连接，可验证二氧化碳与氢氧化钙反应，该反应的化学方程式为：                           。

（4）用E装置收集满一瓶二氧化碳气体，取下双孔橡皮塞，将瓶中的气体沿D装置烧杯左侧内壁缓慢倒入，观察到的现象时                                       ，这些现象说明二氧化碳具有的物理性质            ，化学性质              ，            。

达尔文发现在大风经常袭击的克尔格伦岛上，昆虫的翅要么强大，要么退化，没有中等大小翅的种类，产生这种现象的根本原因是（　　）

A．是否经常使用翅膀的结果

B．食物获得多少的结果

C．大风作用下，长期自然选择的结果

D．定向变异的结果

任务型读写（共10小题；每小题1分，满分10分）

阅读下面短文，根据所读内容在文章后表格中的空格里填入一个最恰当的单词。

注意：表格中的每个空格只填一个单词。请将答案写在答题卡相应题号的横线上。

Everyone knows that you can study the English language for years and still not understand a

native speaker of English when you meet one. Everyone knows that native speakers say a lot of

things that you can't find in any dictionary. Well, here's a secret for you: a lot of British people

can't understand each other either!

There are different local accents across the UK, and a number of areas have several different dialects, that is, they have their own unique vocabulary and grammatical phrases. There were at least six different accents born to London the last time I counted.

Worse than that, it is not just where a person is born in the UK that decides their accent. For example, a language and its accents often vary across class or level of education. Another example is how language can differ among age groups in the UK. The words and pronunciation used by young people in the UK can be completely different compared with those used by adults. They are

creating a "yoof culture".

The word "yoof'”is an informal spelling of "youth". Some people don't consider "yoof' to be a positive term, since its pronunciation is easier and lazier than "youth". Other people see the term

as positive, because it describes how young people are creating their own language, concepts and

identity. When parents find it difficult to understand their children, the children can say more things without the examining of their parents. In this way, young people are starting to find freedom, independence and self-expression. Even though certain groups of society feel threatened

by "yoof culture", new words come and go like fashions.

Therefore, learners should not worry about communicating with native speakers so much. Even British people don't speak English properly! The UK no longer owns the English language.

关于土地权属争议处理，下列说法正确的有( )。

A．在土地所有权和使用权争议解决前，土地的现有使用者可以改变土地用途

B．土地权属纠纷搁置争议的，为了保证土地面积量算的不重不漏，须协商或由上一级国土资源管理部门暂时画定一条工作界线代替权属界线，并签订《土地权属界线争议原由书》

C．土地权属纠纷搁置争议的，暂画定一条工作界线代替权属界线，但工作界线可作为今后确权、划定土地权属界线的依据

D．土地权属界线协议书在全国没有统一的标准

E．土地权属争议，一般由权属界线不清、土地权属紊乱、政策和体制变更，以及其他历史遗留问题所造成

盐酸纳络酮与三氯化铁试液反应显（）

A.红色

B.粉色

C.绿色

D.蓝紫色

E.黑色