《九章算术》“竹九节”问题:现有一根9节的竹子,自上而下各节的容积成等差数列,上

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问题:

《九章算术》“竹九节”问题:现有一根9节的竹子,自上而下各节的容积成等差数列,上面4节的容积共3升,下面3节的容积共4升,则第5节的容积为________升.

考点:等差数列的定义及性质
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()主要用于运送和保护脊(颈)椎受伤人员。

A、躯体固定气囊

B、肢体固定气囊

C、救生三角架

D、折叠式担架

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阅读下面的诗歌,然后回答问题。

杜甫

万里瞿唐月,春来六上弦

时时开暗室,故故满青天。

爽合风襟静,高当泪脸悬。

南飞有乌鹊,夜久落江边。

【注】①瞿唐:瞿塘峡,位于长江三峡奉节至巫山段,安史之乱后,杜甫曾困居于此。②上弦:上弦月,农历每月初七、初八的弓形月亮。③故故:常常;频频。     

从“万里”“时时”“夜久”三个词中任选两个,分别简析它们在表情达意方面的作用。

答:                                                                                       

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下面不属于幼儿社会性需要的形式是()。

A.安全

B.交往

C.游戏

D.尊重

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—Tom, please tell me _________________________.

—In the Olympic Sports Center.

A.where will the match take place

B.where the match will take place

C.when will the match take place

D.when the match will take place

题型:填空题

In the past ten years, many scientists have studied the differences between men and women. And they all got the same answer: The sexes are different, because their brains are different. And this, the scientists say, makes men and women see the world in different ways.

Boys, for example, generally are better than girls at mathematical ideas. Boys also generally are better than girls at the kind of hand and eye movements necessary for ball sports. Girls, on the other hand generally start speaking earlier than boys. And they generally(通常)see better in the dark than boys and are better at learning foreign languages.

What makes men and women better at one thing or another? The answer is the brain. The brain has two sides connected by nerve(神)tracks. The left side generally is used for mathematics, speech and writing. The right side is used for artistic creation and the expression for emotions(情感). In men and women, different areas in each side of the brain develop differently. In boys, for example, it’s the area used for mathematics. In girls, it is the area used for language skills. Another interesting difference is that the two sides of a man’s brain are connected by a smaller nerves than the two sides of a woman’s brain are.

小题1:Which of the following is best to outline(概括)the article?

A.Research on the Brain

B.Differences between Men and Women

C.People’s Different Brains

D.Who Are Better, Boys or Girls小题2:______ men and women think differently.

A.Sex makes

B.The different brains make

C.The different experiences make

D.The influences of society make小题3:According to the article, girls are generally better than boys at ______ in your school.

A.Mathematics

B.Physics

C.English

D.Chemistry小题4:Which of the following is true?

A.The left side of brain in boys generally develops better than that in girls.

B.The left side of brain in girls generally develops better than that in boys.

C.Men are better than women in all things.

D.The area in girls used for language skills develops better.小题5:In men and women the number of nerves connecting the halves of brain _______.

A.is the same

B.is different

C.is zero

D.can’t be found out

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