如图为心脏的结构示意图,回答下列问题. (1)①为______;②为______

题型:解答题

问题:

如图为心脏的结构示意图,回答下列问题.

(1)①为______;②为______;③为______.

(2)心脏由______个胸腔构成,分别是______、______、______、______.

(3)______比______肌肉更发达,这样有利于把血液推向全身各个部位.

(4)你的心脏重量只有300g左右,而完成的工作量却十分惊人.心脏每收缩一次射出的血量叫______,每分钟射出的血量叫______,即一般所说的心输出量.心输出量可以作为衡量______大小的指标.

考点:心脏的结构和功能血液的组成和功能
题型:解答题

 Jeans have become one piece of clothing worn by the most people in the world. Everybody wears them, from the farmer to the lawyer and from models to housewives. But why have jeans become so popular?You’ll get many answers. For some people they look cool, for others jeans are just comfortable. 

Jeans were first stronger trousers made for farm workers in the states of the American west. In the eastern part of the US jeans were hardly worn at all. They were connected with farm people and the workers. So the rich wouldn’t like to wear them. 

It was James Dean and Marlon Brando that made them popular in movies and everyone started to wear them. They were a symbol of the rebellion of young people during the 1950s and 1960s. So these new trousers were not allowed in American schools and sometimes in theatres and cinemas. As time went on,jeans became more acceptable. American people in Europe and Japan often wore them when they were not on duty to show that they were Americans. The trousers showed the world a happier way of life, something that people needed, especially after what they had gone through in World War II. 

Jeans had other advantages as well. They didn’t need to be washed as often as other trousers and women didn’t need to iron them. This became more important as more and more women started working and had less time for housework. 

Today jeans are an important part of our lives. They are always washed a few times before they are sold to give them a faded look. 

小题1:Jeans first appeared ___________.

A.in eastern America

B.in western America

C.in Middle America

D.all over America小题2:From the passage, we can know that James Dean and Marlon Brando were              .

A.film stars

B.Jeans makers

C.young students

D.farmers or workers小题3:What is the possible meaning of the underlined “rebellion” in this passage?

A.奢侈

B.活力

C.清纯

D.反叛小题4:Which of the following was a possible advantage of jeans to women?

A.They could easily be bought anywhere in the world.

B.They didn’t need to be washed often or ironed.

C.They had many different styles and colors.

D.They were comfortable and easy to wash.小题5:What is the best title of the passage?

A.Jeans --- Symbol of Wealth

B.Jeans --- Working Women’s Best Choice

C.Jeans --- Popular Piece of Clothing in Our Daily Life

D.Jeans --- Part of the Lives of Farm People and Workers

题型:解答题

二次函数y=-4(x+3)2-1中,图象是______,开口______,对称轴是直线______,顶点坐标是______,当x______时,函数y随着x的增大而增大,当x______时,函数y随着x的增大而减小.当x=______时,函数y有最______值是______.

题型:解答题

各个螺纹的连接应用密封胶带或螺纹密封脂密封。

题型:解答题

男孩,5岁,洗澡时发现右腹部包块1个月。查体:右上腹包块,肋缘下3cm可及,质软。超声显示右肾严重积水,肾皮质厚度0.5cm。患儿不能配合静脉肾盂造影检查。

为决定患肾是否应该切除,术前应该行下列哪一项检查最有必要().

A.CT

B.MRU

C.肾图

D.IVP

E.肾脏放射性核素的动态扫描

题型:解答题

设有三个基本表,表的结构如下所示,请用SQL完成下列查询:
BORROWER.

借书证号姓名系名班级
98001欧阳信息系98-1
98002刘诚信息系98-1
98101赵林计算机系98-2
LOANS:
借书证号图书馆登记号借书日期
98001T 00101 1999.04.01
98002T001021999.05.01
09001T002011999.05.31
BOOKS:
索书号书名作者图书登记号出版社价格
TP311.13数据库系统与应用李昭原T00101科学19.00
TP311.13数据库原理与应用李昭原T00102科学19.00
TP.065数据库系统原理李昭原T00201北航6.50
TP.1599数据库原理教程王珊T00101清华18.50

①检索至少借了5本书的同学的借书证号、姓名、系名和借书数量

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