下列加粗字的活用情况与例句相同的一项是[ ] 例句：岸土赤而壁立 A．敏而好学，

某小组的同学在课外进行科学探究，以验证铜片在空气中灼烧后，表面生成的黑色物质确实是铜与氧化合生成的CuO，他们进行了以下实验：

（1）由上图两个实验步骤判断：灼烧后铜片表面的黑色物质不是______．

（2）为进一步证明步骤二铜片表面黑色物质的元素组成，他们选用了以下装置继续进行实验：

A、甲同学向A装置中通入纯净的H₂，为检验反应产物，A的右边应连接上面的______装置（填番号），所选装置中的实验现象为______．

B、乙同学向A装置中通入纯净的CO，为检验反应产物，A的右边应连接上面的______装置（填番号），所选装置中的实验现象为______；此方法仅用上述装置进行实验有明显的缺陷，要弥补这个缺陷，应采取的措施是：______．

C、通入的气体如果含有少量水蒸汽，则应在A装置左边连接一个______装置．

D、对A装置加热前，通入纯净气体应先______后______．

（3）结论：经过甲、乙两同学的实验现象证明，______．

（4）如果甲同学要用数据证明（3）的结论，你认为还应补充的实验操作是：______．

阅读理解。

     For a while, my neighborhood was taken ever by an army of joggers (慢跑者). They were there all the

time: early morning, noon, and evening. There were little old ladies in gray sweats, young couples in Adidas

shoes, middle-aged men with red faces. "Come on!" My friend Alex encouraged me to join him as he jogged

by my house every evening. "You'll feel great."

     Well, I had nothing against feeling great and if Alex could jog every day, anyone could. So I took up jogging

seriously and gave it a good two months of my life, and not a day more. Based on my experience, jogging is

the most overvalued form of exercise around, and judging from the number of the people who left our

neighborhood jogging army. I'm not alone in my opinion.

     First of all, jogging is very hard on the body. Your legs and feet a real pounding (追击) ruining down a road

for two or three miles. I developed foot, leg, and back problems. Then I read about a nationally famous jogger

who died of a heart attack while jogging, and I had something else to worry about. Jogging doesn't kill hundreds

of people, but if you have any physical weaknesses, jogging will surely bring them out, as they did with me.

     Secondly, I got no enjoyment out of jogging. Putting one foot in front of the other for forty-five minutes

isn't my idea of fun. Jogging is also a lonely pastime. Some joggers say, "I love being out there with just my

thoughts" Well, my thoughts began to bore me, and most of them were on how much my legs hurt.

     And how could I enjoy something that brought me pain? And that wasn't just the first week: it was

practically every day for two months. I never got past the pain level, and pain isn't fun. What a cruel way to do

it! So many other exercises, including walking, lead to almost the same results painlessly, so why jog?

     I don't jog any more, and I don't think I ever will. I'm walking two miles three times a week at a fast pace,

and that feels good. I bicycle to work when the weather is good. I'm getting exercise, and I'm enjoying it at the

same time. I could never say the same for jogging, and I've found a lot of better ways to stay in shape.

1. From the first paragraph, we learn that in the writer's neighborhood _____.

A. jogging became very popular

B. people jogged only during the daytime

C. Alex organized an army of joggers

D. jogging provided a chance to get together

2. The underlined word "them"(Paragraph 3) most probably refers to _____.

A. heart attacks

B. Back problems

C. famous joggers

D. physical weaknesses

3. What was the writer's attitude towards jogging in the beginning?

A. He felt it was worth a try.

B. He was very fond of it.

C. He was strongly against it.

D. He thought it must be painful.

4. Why did the writer give up jogging two months later?

A. He disliked doing exercise outside.

B. He found it neither healthy nor interesting.

C. He was afraid of having a heart attack.

D. He was worried about being left alone.

5. From the writer's experience, we can conclude that _____.

A. not everyone enjoys jogging

B. he is the only person who hates jogging

C. nothing other than jogging can help people keep fit

D. jogging makes people feel greater than any other sport.

当我们发现自己所做选择是错误的以后，应该[ ]

A．寻找借口，推卸自己的责任   

B．吸取教训，提高选择的能力

C．掩饰错误，维护自己的名誉   

D．坦然接受，坚持自己的选择

腔隙性脑梗死

我国能源发展“十一五”规划提出，到2010年，使火电厂每千瓦时烟尘排放量控制在1.2克、二氧化硫排放量下降到2.7克，电厂废水排放达标率实现（）。

A、20%

B、60%

C、100%