我国南方沿海航线的中心是[ ] A．福州、厦门 B．广州、香港　 C．广州、湛江

某化学兴趣小组为探究Cl₂、Br₂、Fe³⁺的氧化性强弱，设计了如下实验：

①检查气体发生装置A的气密性的操作是                                            。

②整套实验装置存在一处明显的不足，请指出：                              。

（2）用改正后的装置进行实验，实验过程如下：

（3）因忙于观察和记录，没有及时停止反应，D、E中均发生了新的变化。

D装置中：红色慢慢褪去。

E装置中：CCl₄层先由无色变为橙色，后颜色逐渐加深，直至变成红色。

为探究上述实验现象的本质，小组同学查得资料如下：

①请用平衡移动原理（结合化学用语）解释Cl₂过量时D中溶液红色褪去的原因：

                                                                         ，

请设计简单实验证明上述解释：                                                  。

②欲探究E中颜色变化的原因，设计实验如下：

用分液漏斗分离出E的下层溶液，蒸馏、收集红色物质，取少量，加入AgNO₃溶液，结果观察到仅有白色沉淀产生。请结合化学用语解释仅产生白色沉淀的原因：                                    。

③将少量BrCl通入到碘化钾溶液中，该反应的化学方程式为                                  。

阅读理解

     Body language is the quiet, secret and most powerful language of all! It is said that our body

movements communicate about 50 percent of what we really mean while words only express 7 percent.

So, while your mouth is closed, your body is just saying...

     Arms. How you hold your arms shows how open and receptive you are to people you meet. If you

keep your arms to the sides of your body or behind your back, this suggests you are not afraid of taking on whatever comes your way. Outgoing people generally use their arms with big movements, while quieter

people keep them close to their bodies. If someone upsets you, just cross your arms to show you're

unhappy!

     Head. When you want to appear confident, keep your head level. If you are a monitor in class, you

can also take on this position when you want your words to be taken seriously. However, to be friendly in

listening or speaking, you must move your head a little.

     Legs. Your legs tend to move around a lot more than normal when you are nervous or telling lies. If

you are at interviews, try to keep them still!

     Posture (姿势). A good posture makes you feel better about yourself. If you are feeling down, you

normally don't sit straight, with your shoulders inwards. This makes breathing more difficult, which can

make you feel nervous or uncomfortable.

     Mouth. When you are thinking, you often purse your lips. You might also use this position to hold back an angry comment you don't wish to show. However, it will probably still be noticed, and people will know you're not pleased.

     Face. When you lie, you might put on a false

face. But that expression would crack briefly, allowing displays of true emotions such as happiness,

sadness, disgust (厌恶) and fear to come through.

1. When someone is keeping his arms behind his back, he tries to tell you that       .

A. he is outgoing

B. he is angry

C. he is not afraid

D. he is cool

2. If you want to appear confident, you should       .

A. move your arms a lot

B. keep your head level

C. move your head a little

D. cross your arms

3. Which of the following movements tells someone is nervous?

A. Moving around a lot more than normal.

B. Not sitting straight with the shoulders inwards.

C. Having the lips pursed to hold back an angry comment.

D. Keeping the arms to the sides of the body.

4. What can we infer from the passage?

A. Different people in different countries must have the same understanding of the same body movement.

B. Body language can express more meanings than words do in communication.

C. We cannot communicate with others without words.

D. It's not polite to use body language in formal communication.

5. Which of the following can be the best title of the passage?

A. Body language, the most commonly used language

B. Arms tell more than legs

C. Facial expressions tell the truth

D. One simple movement lets slip secrets of mind

使用最广泛的D/A转换技术有权电阻网络和（）电阻网络转换模式。

艾森克的人格理论强调( )。

A．中心特质—次要特质

B．内向—外向

C．共同特质—个别特质

D．情绪稳定—隋绪不稳定

下列项目中，( )属于工程建设其他费用。

A．工具、器具及生产家具购置费

B．土地征用及迁移补偿费

C．建设单位开办费

D．联合试运转费

E．建设期贷款利息费