裂队走与并队走是（）。A.队列练习 B.队形练习 C.徒手体操练习 D.步伐变换

公众参与是指（　　）

A．公众依法参与保护环境的权利和义务

B．公众的环境权

C．社区号召回收废旧电池

D．公民在良好的环境中生活和生产的权利

     Summer is the ideal time of year for one of my favorite outdoor activities, hiking (徒步旅行). It is

much more than just a great Workout. You get to be outside of the confines of a gym and be together

with nature. You breathe in the fresh, clean air while the city life you endured all week just fades away.

You are suddenly transported somewhere else. You are suddenly in a place where you can appreciate

the untouched, simplistic beauty of nature. The trees are green, the wild flowers are growing and the

woods are filled with activity. Once you experience it, you're hooked.

     Whether hiking in the deserts of Arizona or the mountains of Alberta, you suddenly realize you are

not alone and there is something much bigger at work. There is a realization that life is precious and you

think deeply about your life.

     Another wonderful part of hiking is that you can participate at any level and it is, for the most part,

free. It is a great way to escape the rat race, even during the week. If you have any problems you need

to solve, hiking is really good for clearing your head and removing stress.

     If hiking sounds intimidating to you, it is essentially walking on a whole new level. Experts have

spoken about the benefits of walking for years. Walking doesn't stress your legs as much as running and

countless studies agree walking leads to weight loss and better health. It is good for your heart, reduces

illness and has even been shown to enhance your thinking. So why wouldn't you want to do it?

1. What disappears for someone who is hiking?

A. Green trees.

B. Beautiful nature.  

C. City life.    

D. Precious things.

2. Once you take up hiking in nature as something you do, you______.

A. feel much bigger than before

B. love it and want to do it often

C. wish you lived outside of the city

D. look for new hiking places, like Arizona

3. How do you feel after you've begun hiking?

A. Anxious.    

B. Thoughtful.    

C. Lonely.    

D. Free from stress.

4. How is running different than walking?

A. Running is harder on the legs.        

B. Running is better h/r weight loss.

C. Running is good for a person's heart.  

D. Running is a cause for improved thinking.

（5分）在密闭容器中，通入xmolH₂和ymolI₂（g），改变下列条件，反应速率将如何改变？（填“增大”、“减小”或“不变”）

（1）升高温度             ；

（2）加入催化剂                       ；

（3）容器容积充入H₂                 ；

（4）扩大容器的体积                        

（5）容器容积不变，通入氖气                                     

天线参数分为机械参数与电器性能参数，以下属于电器性能参数的是（）

A.天线罩材料

B.存储温度

C.下倾角

D.工作温度

根据UCP500规定，汇票付款人应是（）

A.进口人

B.开证申请人

C.开证行

D.议付行