上海证券交易所为上市公司股东大会网络投票设置专用投票代码和投票简称。

有A、B、C、D四种元素，A是地壳中含量最多的金属元素，B元素原子第三电子层比第二电子层少一个电子，C元素的原子得到2个电子以及D元素原子失去一个电子后所得粒子均与氖原子具有相同的电子层结构，写出：

(1)上述四种元素的元素符号：A_______、B_______、C____、D____。

(2)画出A原子和C原子结构示意图：A原子_________；C原子____________。

阅读理解。

Dear Mr. Zhu,

     I am writing to your magazine's "Teenagers Now" column (专栏) to ask for some help with my

16-year-old son. At the moment, he refuses to do almost everything his mother and I ask him to do. He

is our only child and we treat him very well. His grandparents buy him many things, and yet he is still rude

to us. He refuses to spend time with us or do as we tell him. Sometimes he acts as if he doesn't even love

us at all.

     Now he refuses to do his homework, and instead insists on wasting his time watching DVDs and

listening to foreign music. I cannot understand this music, but I don't like it. He also spends too much time

in Internet cafes, where he either plays games or chats online. He is wasting valuable time during this

important period in his life!

     What am I to do? At present, to prevent making his mother unhappy with an argument, I am allowing

him his freedom. However, I am worried that if I keep allowing him to do what he wants, he may fail at

school, or worse.

     How can I help my son without harming our relation ship?

                                                                                                       Yours,

                                                                                                              Liu Zhenhua

1. What's Mr. Zhu's job?

A. A teacher.

B. A magazine columnist.

C. A youth worker.

D. A doctor.

2. From the passage, we can know that Mr. Liu's son is _____ to his parents.

A. friendly

B. thankful

C. polite

D. rude

3. What does Liu Zhenhua write to Mr. Zhu for?

A. To blame his son.

B. To ask for help with his son.

C. To say something about his son.

D. To complain to him about his son.

4. Mr. Liu's son always spends his time _____.

A. doing his homework

B. playing games online

C. chatting with his parents

D. doing everything his parents asking him to do

晶体管具有电流放大能力，而放大能源来自地放大电路中的（）。

A．晶体管本身

B．信号源

C．负载输入

D．直流电源

下图是实验室用来验证乙烯与氢气反应产物的装置，请回答下列问题

（1）方框内装置用来制取乙烯，其中包括的仪器是：①碎瓷片 ②石棉网和铁架台 ③圆底烧瓶 ④温度计（量程100℃）⑤温度计（量程200℃）⑥酒精灯 ⑦单孔塞 ⑧双孔塞⑨导管。

不选用的仪器有__________________（填序号）

（2）写出制乙烯化学方程式：___________________________________

（3）碱石灰的作用是：__________________________________

（4）实验过程中，发现溴水会褪色，可能的原因是：_____________________________

（5）出现什么现象可说明生成了乙烷？___________________________

女性，30岁。右上肺结核治愈后一年半，出现右肺结核性渗出性胸膜炎。治疗应选（）

A.异烟肼、链霉素、对氨基水杨酸

B.异烟肼、链霉素、青霉素

C.异烟肼、链霉素

D.利福平、对氨基水杨酸

E.利福平、异烟肼、乙胺丁醇