什么是党的群众路线？

A～F六种元素中，除C外其他均为短周期元素，它们的原子结构或性质如下表所示.

请回答下列问题：

(1)A在元素周期表中的位置是________；A与E形成的化合物的电子式是_______________．

(2)C的某种氯化物的浓溶液可以腐蚀印刷电路板上的金属铜，此反应的离子方程式是______________________________________.

(3)B的单质与D的氢化物在一定条件下反应生成BD和另一产物的化学方程式是____________________________________.

(4)F的盐酸盐水溶液呈酸性，原因是_________________________(用离子方程式表示)；F的单质与C、D形成的相对分子质量为160的化合物在一定条件下反应的化学方程式：__________________________________________.

Each year , millions of people go abroad to work ,study ,or travel .It’s a great way to find out what life is like in another part of the world !You’re probably hoping to make new friends and learn about the culture in your host country everything from attitudes and beliefs to social customs and popular foods. But constantly having to deal with new situations can be frustrating (挫折), even stressful.

Homesickness, stress, fear , and confusion are all symptoms of “culture shock”. At first ,you may feel like getting on the plane and heading home .It’s OK to have those feelings, but the following are some tips to help you handle the challenges that you will face .

Don’t expect to be perfect , You may feel frustrated that you have culture shock ,especially since you probably spent so much time preparing for your trip .No matter how much information you read ,or how well you speak the host language ,it is natural to feel overwhelmed sometimes. If you give yourself some time, things will gradually get easier.

Have an open mind .While it’s certainly OK to feel frustration or confusion in your new surroundings ,try not to form an opinion about the new culture too soon .Don’t think of the host as better or worse , just different –you’ll be more willing to try new things .

Participate .This is obvious ,but everybody needs to be reminded. Just watching life go on around you isn’t good enough .You really need to try things for yourself . Don’t worry about making a mistake; people in your host country will generally be very understanding and willing to help if you have question .Your study abroad experience is a unique and special time in your life, one that you’ll never forget. If you follow our suggestions ,you’ll be able to handle it well ,and have a wonderful time. Good luck!

小题1:What is culture shock ?

A．Something you feel surprised at .

B．The problems you have when you go to another country

C．The frightening feelings you have

D．Something different from your own culture小题2:What should you do when you feel depressed ?

A．Go back to your own homeland

B．Talk to someone about your problem

C．Give yourself some time to get used to it

D．Stop thinking of it小题3:Which of the following statements is WRONG ?

A．It is natural to feel overwhelmed sometimes

B．Not everything is perfect

C．Try to form the opinion about the new culture as soon as possible

D．Tell others about your problems小题4:What is the main idea of this article ?

A．How to overcome culture shock

B．Why do people have culture shock

C．Who might have culture shock

D．When will you have culture shock

关于同心圆硬化除哪项以外都是正确的（）。

A.同心圆硬化又称Balo病，病灶内髓鞘脱失带与髓鞘保存带呈同心圆层状交互排列，形成树木年轮状改变

B.病变分布及临床特点与多发性硬化完全不同，但认为本病是MS的变异型

C.临床上患者多为青壮年，急性起病，多以精神障碍为首发症状，之后出现轻偏瘫、失语、眼外肌麻痹、眼球浮动和假性球麻痹等

D.体征包括轻偏瘫、肌张力增高及病理征等

E.MRI显示额、顶、枕和颞叶白质洋葱头样或树木年轮样黑白相间类圆形病灶

新中国成立后，我国从苏联米里设计局引进了米-4直升机的制造技术，发展出我国第一批用于军事和民用领域的“直-5”直升机。该型直升机服役时间很长，还曾作为周恩来 * * 在国内视察时的专机。这种直升机是由（）制造的

A.哈尔滨飞机制造厂

B.景德镇飞机制造厂

C.西安飞机制造厂

从（）角度来看，原油稳定方法中精馏法比提馏法好。

A.塔顶产品收率要求

B.热能的综合利用

C.塔底产品质量要求

D.产品质量