《气体灭火系统施工及验收规范》(GB50263-2007)适用的气体灭火系统包括低压

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《气体灭火系统施工及验收规范》(GB50263-2007)适用的气体灭火系统包括低压二氧化碳灭火系统在内。

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已知集合A={x||x-a|≤4,x∈R,a∈R},集合B={x|
6
x+1
<1}.
(1)若A∩B=(5,7],求实数a的值;
(2)若A∩B=A,求实数a的取值范围.
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市场经济对医学实践有负效应,主要是因为()。

A.市场经济的自主性

B.市场经济的竞争性

C.市场经济的开放性

D.市场经济的平等性

E.市场经济的求利性

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When you are little, the whole world feels like a big playground. I was living in Conyers, Georgia the summer it all happened. I was a second grader, but my best friend Stephanie was only in the first grade. Both of our parents were at work and most of the time they let us go our own way.

It was a hot afternoon and we decided to have an adventure in Stephanie’s basement. As I opened the basement door, before us lay the biggest room, full of amazing things like guns, dolls, and old clothes. I ran downstairs, and spotted red steel can. It was paint. I looked beyond it and there lay even more paint in bright colors like purple, orange, blue and green.

“Stephanie, I just found us a project for the day. Get some paintbrushes. We are fixing to paint.” She screamed with excitement as I told her of my secret plans and immediately we got to work. We gathered all the brushes we could find and moved all of our materials to my yard. There on the road in front of my house, we painted bit stripes (条纹) of colors across the pavement (人行道). Stripe by stripe, our colors turned into a beautiful rainbow. It was fantastic!

The sun was starting to sink. I saw a car in the distance and jumped up as I recognized the car. It was my mother. I couldn’t wait to show her my masterpiece. The car pulled slowly into the driveway and from the look on my mother’s face, I could tell that I was in deep trouble.

My mother shut the car door and walked towards me. Her eyes glaring, she shouted, “What in the world were you thinking? I understood when you made castles out of leaves, and climbed the neighbors’ trees, but this! Come inside right now!” I stood there glaring hack at her for a minute, angry because she had insulted (侮辱) my art. 

“Now go clean it up!” Mother and I began cleaning the road. Tears ran down my cheeks as I saw my beautiful rainbow turn into black cement.  

Though years have now passed, I still wonder where my rainbow has gone. I wonder if, maybe when I get older, I can find my rainbow and never have to brush it away. I guess we all need sort of rainbow to brighten our lives from time to time and to keep our hopes and dreams colorful.

小题1:What did the writer want to do when his mother came home?

A.To introduce Stephanie to her.

B.To prevent her from seeing his painting.

C.To put the materials back in the yard.

D.To show his artwork to her.小题2: In his mother’s eyes, the writer_______.

A.was a born artist

B.always caused trouble

C.was a problem solver

D.worked very hard小题3:The underlined word “rainbow” in the last paragraph refers to ______.

A.the rainbow in the sky

B.the stripes on the pavement

C.something imaginative and fun

D.important lessons learned in childhood小题4:It can be learned from the passage that parents should ________.

A.encourage children to paint

B.value friendship among children

C.discover the hidden talent in children

D.protect rather than destroy children’s dreams

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企业对其他单位的长期股权投资,即使其持股比例不超过20%,只要能对被投资单位的财务和经营政策施加重大影响,仍应采用权益法进行核算。 ( )

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阵发性室上性心动过速

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