教师作为教学的（），是沟通学生与音乐的桥梁。 A.主导者和协调者 B.组织者和指导者

For a while, my neighborhood was taken over 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 have 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.

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

A．people jogged only during the daytime

B．jogging became very popular

C．Alex organized an army of joggers

D．jogging provided a chance to get together小题2: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.小题3:Why did the writer give up jogging two months later?

A．He found it neither healthy nor interesting.

B．He disliked doing ecercise outside.

C．He was afraid of having a heart attack.

D．He was worried about being left alone.小题4: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.

分解因式：（x²+2x）²+2x（x+2）+1

土建工程抹灰前电气工程要做好的工作有（）。

A、抹灰前要安装好配电箱，复查预埋砖等是否符合图纸；

B、检查预留箱盒灰口、穿管孔洞、卡架、套管等是否齐全，检查管路是否齐全，是否已经穿完管线，焊接好了包头，把没有盖的箱、盒堵好；

C、防雷引上线敷设在柱子混凝土或利用柱子筋焊接。作好均压环焊接及金属门窗接地线的敷设；

D、灯具安装、吊风扇安装及箱柜安装作预埋吊钩和基础槽钢。

以下不属于特种设备采购要求的是( )。

A．具有原使用单位的注销登记证明
B．具有完整的安全技术档案
C．发票
D．经定期检验合格

某土方工程，8月份计划工程量1.5万立方米，计划单价为10元/m³，实际完成工程量1.2万立方米，实际单价为8元/m³，8月底该土方工程的进度偏差为（）万元。

A.3

B.2.4

C.-3

D.-2.4