MnO₂+4HCl（浓） $\underset{\_}{\underset{\_}{\Delta }}$ MnCl₂+Cl₂↑+2H₂O实验装置如图1所示．

【查阅资料】

①氯气是黄绿色且有毒的气体，难溶于饱和食盐水．

氯气能与氢氧化钠溶液反应，生成氯化钠、次氯酸钠（NaClO）和水．

②常温常压下，氢气的密度为0.09g/L．

【回答问题】

阅读下面短文，掌握其大意，然后从下列小题所给的A、B、C、D项中选出最佳选项。

     When Rebecca was a middle school student, she was often bullied（欺凌）. At that time, she didn't want to tell others. However, she now thinks people who are bullied should talk about their 1.

    Rebecca says that many people who are bullied 2 in silence. She says that although she 3 heard a lot about bullying when she was in primary school, she never thought it would happen to her.

    Rebecca told us that the bullying began when she went to middle school. People started making fun of her for being a 4 student and knowing all the answers.

    She went on to say that every time she answered a question correctly in class, everyone would start shouting and saying that she was too 5 for them.

    She told us that by the end of the year, she was very 6 about the bullying and became ill. She began to hate school. But 7 she had a friend who could talk to, and they told their head teacher about her problem. She believes that talking to the teacher 8 her a lot. They found ways to deal with the problem, and the bullying finally 9 .

    Her 10 is, don't see yourself as the problem.Nobody should be bullied. But if you don't tell anyone what is going on, nobody will know that you need help.

阅读《端午的鸭蛋》选段，完成各小题

    ①高邮咸蛋的特点是质细而油多。蛋白柔嫩，不似别处的发干、发粉，入口如嚼石灰。油多尤为别处所不及。鸭蛋的吃法，如袁子才所说，带壳切开，是一种，那是席间待客的办法。平常食用，一般都是敲破“空头”用筷子挖着吃。筷子头一扎下去，吱——红油就冒出来了。高邮咸蛋的黄是通红的。苏北有一道名菜，叫做“朱砂豆腐”，就是用高邮鸭蛋黄炒的豆腐。我在北京吃的咸鸭蛋，蛋黄是浅黄色的，这叫什么咸鸭蛋呢！

②端午节，我们那里的孩子兴挂“鸭蛋络子”。头一天，就由姑姑或姐姐用彩色丝线打好了络子。端午一早，鸭蛋煮熟了，由孩子自己去挑一个，鸭蛋有什么可挑的呢？有！一要挑淡青壳的。鸭蛋壳有白的和淡青的两种。二要挑形状好看的。别说鸭蛋都是一样的，细看却不同。有的样子蠢，有的秀气。挑好了，装在络子里，挂在大襟的纽扣上。这有什么好看呢？然而它是孩子心爱的饰物。鸭蛋络子挂了多半天，什么时候孩子一高兴，就把络子里的鸭蛋掏出来，吃了。端午的鸭蛋，新腌不久，只有一点淡淡的咸味，白嘴吃也可以。