聚丙烯的断裂伸长率是其短项，一般要求三层聚丙烯涂层断裂伸长率不小于（）

北京奥运会“祥云”火炬燃料是丙烷（C₃H₈），亚特兰大火炬燃料是丙烯（C₃H₆）

（1）丙烷脱氢可得丙烯．已知：C₃H₈（g）→CH₄（g）+HC≡CH（g）+H₂（g）△H₁=+156.6kJ•mol^-1

CH₃CH=CH₂（g）→CH₄（g）+HC≡CH（g）△H₂=+32.4kJ•mol^-1 则相同条件下，反应C₃H₈（g）→CH₃CH=CH₂（g）+H₂（g）的△H=______kJ•mol^-1

（2）以丙烷为燃料制作新型燃料电池，电池的正极通入O₂，负极通入丙烷，电解质是熔融碳酸盐．电池总反应方程式为______；放电时，CO₃^2-移向电池的______（填“正”或“负”）极．

（3）碳氢化合物完全燃烧生成CO₂和H₂O．常温常压下，空气中的CO₂溶于水，达到平衡时，溶液的pH=5.60，c（H₂CO₃）=1.5×10^-5mol•L^-1．若忽略水的电离及H₂CO₃的第二级电离，则H₂CO₃HCO₃^-+H⁺的平衡常数K₁=______．（已知：10^-5.60=2.5×10^-6）

（4）常温下，0.1mol•L^-1NaHCO₃溶液的pH大于8，则溶液c（H₂CO₃）______c（CO₃^2-）（填“＞”、“=”或“＜”），原因是______（用离子方程式和文字说明）

员工的非经济性薪酬主要包括三个方面，下列选项中不属于员工的非经济性薪酬的是（）。

A.工作本身

B.奖金

C.工作环境

D.企业文化

阅读理解。

     For a while, my neighborhood was taken ever by an army of joggers (慢跑的人). 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 (沉重的脚步) 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. hundreds of people

D. physical weaknesses

3. From the writer's experience, we can conclude that______.

A. jogging can help people keep fit

B. many physical problems result from jogging

C. not everyone enjoys jogging

D. jogging makes people feel greater

健康传播过程中传授双方所制作、传递和分享的内容称为（）。

A.健康知识

B.健康信息

C.健康讯息

D.健康过程

E.健康行为

犯罪嫌疑人有权拒绝回答与本案无关的问题。