已知数列{an}的前n项和Sn=2-2n+1,则a3=( ) A.-1 B.-2 C.

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问题:

已知数列{an}的前n项和Sn=2-2n+1,则a3=(  )
A.-1B.-2C.-4D.-8
考点:等比数列的前n项和
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斗轮机行走中可以回转,俯仰角不准超过规定值。

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读下面四地气温降水资料图,回答问题

图中四类气候中,分布在热带的是(  )

A.①②

B.②③

C.③④

D.①④

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Poet William Stafford once said that we are defined more by the detours (绕行路) in life than by the narrow road toward goals. I like this image. But it was quite by accident that I discovered the deep meaning of his words.

For years we made the long drive from our home in Seattle to my parents’ home in Boise in nine hours. We traveled the way most people do: the fastest, shortest, easiest road, especially when I was alone with four noisy, restless kids who hate confinement (限制) and have strong opinions about everything.

Road trips felt risky, so I would drive fast, stopping only when I had to. We would stick to the freeways and arrive tired.

But then Banner, our lamb was born. He was rejected by his mama days before our planned trip to Boise. I had two choices: leave Banner with my husband, or take him with me. My husband made the decision for me.

That is how I found myself on the road with four kids, a baby lamb and nothing but my everlasting optimism to see me through. We took the country roads out of necessity. We had to stop every hour, let Banner shake out his legs and feed him. The kids chased him and one another. They’d get back in the car breathless and energized, smelling fresh from the cold air.

We explored side roads, catching grasshoppers in waist-high grass. Even if we simply looked out of the car windows at baby pigs following their mother, or fish leaping out of the water, it was better than the best ride down the freeway. Here was life. And new horizons (见识).

We eventually arrived at my parents’ doorstep astonishingly fresh and full of stories.

I grew brave with the trip back home and creative with my disciplining technique. On an empty section of road, everyone started quarreling. I stopped the car, ordered all kids out and told them to meet me up ahead. I parked my car half a mile away and read my book in sweet silence.

Some road trips are by necessity fast and straight. But that trip with Banner opened our eyes to a world available to anyone adventurous enough to wander around and made me realize that a detour may uncover the best part of a journey—and the best part of yourself.

小题1:Why did the author use to take freeways to her parents’ home?

A.It was less tiring.

B.It would be faster and safer.

C.Her kids would feel less confined.

D.She felt better with other drivers nearby.小题2:The author stopped regularly on the country roads to _____.

A. relax in the fresh air

B. take a deep breath

C. take care of the lamb

C. let the kids play with Banner.

小题3:What does the author discover from the trio according to Paragraph 6?

A.Freeways are where beauty hides.

B.Getting close to nature adds to the joy of life.

C.Enjoying the beauty of nature benefits one’s health.

D.One should follow side roads to watch wild animals.小题4:Why did the author ask the kids to get out of the car on their way back home?

A.To give herself some time to read.

B.To order some food for them.

C.To play a game with them.

D.To let them cool down.小题5:What could be the best title for the passage?

A.Charm of the Detour

B.The Road to Bravery

C.Creativity out of Necessity

D.Road Trip and Country Life

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关于个人资产负债表的表述中,错误的是( )。

A.反映客户个人资产负债在某一期间的情况

B.理财规划师可以根据客户情况进行格式设计

C.通常被分为资产和负债两部分

D.通常以数据调查表为编制基础

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叉车、电瓶车停车时,随意停放,手闸不拉,钥匙不拔是不允许的()

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