下图中A为电源，B为浸透饱和食盐水和酚酞试液的滤纸，C为盛有稀硫酸的电解槽，e、

发布时间：2017-05-21 20:47 │ 来源：www.tikuol.com

题型：选择题

问题：

下图中A为电源，B为浸透饱和食盐水和酚酞试液的滤纸，C为盛有稀硫酸的电解槽，e、f为Pt电极。接通电源后，发现d点显红色。下列有关说法正确的是

A．电源A上的a极是正极

B．d极上的电极反应方程式为2Cl^-－2e^-＝Cl₂↑

C．e、f极上产生的气体体积比为2：1

D．C中溶液的pH增大

考点：电解池原理电解池电极反应式的书写

题型：选择题

词语填空。

see, body, they, inside, if, that, increase, date, but, want

     Snake dishes have become popular in recent years. Snake meat is often 1______ in restaurants. It seems
that eating snake is now in fashion, and if you haven't eaten snake yet, you're considered "out of 2______".
    But I wonder whether all of the trends (趋势) are worth following. Some people may defend (辩解) for
3______ by saying that eating snake is good for their health. 4______ these people don't find out that mice and worms are often in snakes' 5______, so there are many parasites (寄生虫) found 6______ snakes. They may
be bad for our health.
    According to the English newspaper,"Shanghai Star,about 1000 tons of snake are eaten every year in China.
In Shenzhen of Guangdong Province,sometimes as many as 10 tons of snake are served on dinner tables in a
single day. 7______ we still turn a blind eye to this,a vicious circle (恶性循环) will be created:if more snakes
are eaten by people,the number of snakes will drop,but the number of mice will 8______, which will result in
a decrease of crop output. This will make more people hungry. Who 9______ to see such a thing happen?
    So let's not eat snake any more. To protect the snake is protecting the earth 10______ our human beings
live on.

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下列( )是不合法的Java标识符。

A．Tree & Glasses

B．firstJavaApplet

C．_$theLastOne

D．$2735

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题型：选择题

在国内1425个电子图书网站中，原创网站仅占4.49%。严重的盗版问题，导致国内电子图书市场迟迟不能进入迅速发展阶段，其销售收入也远不能同传统纸质图书市场相比。由此可以推出( )。

A．解决了盗版问题，国内电子图书市场就可以迅速发展

B．原创网站也存在盗版问题

C．必须减少电子图书网站的数量才能促使电子图书市场的发展

D．国内电子图书市场远未发育成熟

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使用资源管理器可以完成文件/文件夹的建立、（）、复制、删除。

A、使用

B、移动

C、开

D、串联

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题型：选择题

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