(血管), delivering essential elements, and removing harmful wastes. Without blood, the human body would
stop working.
Blood is the fluid of life, transporting oxygen from the lungs to body tissue and carbon dioxide from body
tissue to the lungs. Blood is the fluid of growth, transporting nourishment from digestion and hormones from
glands (腺) throughout the body. Blood is the fluid of health, transporting disease fighting substances to the
tissue and waste to the kidneys (肾脏).
Because it contains living cells, blood is alive. Red blood cells and white blood cells are responsible for
nourishing and cleansing the body. Since the cells are alive, they too need nourishment. Vitamins and Minerals
keep the blood healthy. The blood cells have a definite life cycle, just as all living organisms do.
About 55 percent of blood is plasma (血浆), a straw-coloured clear liquid. The liquid plasma carries the
solid cells and the platelets (血小板), which help blood clot. Without blood platelets, you would bleed to death.
When the human body loses a little bit of blood through a minor wound, the platelets cause the blood to
clot so that the bleeding stops. Because new blood is always being made inside of your bones, the body can
replace the lost blood. When the human body loses a lot of blood through a major wound, that blood has to
be replaced through a blood transfusion from other people.
But everybody"s blood is not the same. There are four different blood types. Plus, your blood has Rh
factors, which make it even more unique. Blood received through a transfusion must match your own.
Patients who are scheduled to have major surgery make autologous blood donations (donations of their own
blood) so that they have a perfect match.
B. remove harmful wastes from the body
C. absorb oxygen from the air to body tissue
D. move carbon dioxide from body tissue to the lungs
B. Growth.
C. Health.
D. Waste.
B. It carries the solid cells and the platelets.
C. It gives the blood cells a definite life cycle.
D. It helps the blood clot so that the bleeding stops.
best of four years at college? The New York Times received suggestions recently from PhD students and
seniors at some of the top US universities. Here"s their advice.
"Many young people today are raised in a protective cocoon (茧)", wrote Tim Novikoff, a PhD student
at Comell. "College is a time to explore the world beyond and a chance to learn new things about yourself.
Take classes in different subjects. Try lots of different clubs and activities."
Remember also to take some time away from campus, suggested Willie Lin, a student at Washington
University. "If you spend all of your time in school, then it becomes too easy to let criticism from an unkind
professor or a conflict with a roommate take up large proportions."
Try to find work assisting a researcher or a professor-this is the advice from Aman Singh Gill, a PhD
student at Stony Brook University. And he also said, "With a window into the world of research, you will
find yourself thinking more critically, accepting fewer states at face value and perhaps developing a brave
sense of what you can accomplish."
Many young people cannot imagine even a single day without devices such as computers and cellphones.
But try to keep yourself off them, cautioned Christine Smallwood, a PhD student at Columbia University.
Start by scheduling a few Internet-free hours each day, with your phone turned off. It"s the only way
you"ll be able to read anything serious. "This will also have the benefit of making you harder to reach, and
thus more mysterious and fascinating to new friends and acquaintances (熟人)," she suggested.
B. take some time out of school
C. listen to criticism more
D. not argue with roommates
B. Aman Singh Gill.
C. Christine Smallwood.
D. Willie Lin.
B. to turn them off
C. to keep ourselves off them forever
D. to make a schedule to use them
B. ways to read something serious regularly
C. days without cellphones and computers
D. chances to go to university you really like
The 100-kilogram blue solar car invented by 10 students at Southwest University"s College of Engineering
and Technology in Chongqing has a top with four solar panels that charge the battery that powers the auto.
Its speed is between 30-40 kilometers per hour and when fully powered the car can be driven as far as 50
kilometers. "The car is easy to drive. A person without any driving experiences could learn to use it in several
minutes. It fits for campus and the golf course," said He Daijie, the leader of the invention team and a senior
at the college. Or if one prefers it can be turned into moped scooter (电动助力车), he said.
Four students at Shenyang University of Technology in Liaoning Province invented a door light powered
by electrical energy produced by opening and closing a door. When people open or close a door, the door
produces mechanical energy that could be turned into electrical energy. After numerous tests for several
months, the students fixed a joint lever above the door that connects the door and a speeding gear case to drive
a generator attached to the door and send energy to storage cells. The storage cells provide electrical energy
for the light.
A college student"s dorm door is opened and closed about 60-100 times a day, which could produce 160-
280 milliamps of electrical energy. It takes 160 milliamps to keep a light working for at least 10 hours, said
Xia Yingbiao, one of the invention team members and a mechanical designer and manufacturing and automation
junior. If these lights were used with the invention at the entrances in Shenyang schools, about 700,000
kilowatt hours a year would be saved, the team said. The university is applying patents for the invention.
B. In parks and gardens.
C. On campus and the golf course.
D. In kindergartens
B. with solar panels on its top
C. through the wires at public places
D. through the wires at home
B. Mechanical energy by opening and closing the door.
C. Sun panels on the building top.
D. Batteries charged before being used.
B. inventions are not so difficult
C. these inventions are valuable but not practical
D. inventions can"t lack knowledge and money
make your child feel angry, hurt, or misunderstood by what you say without realizing it yourself. It is important
to give your child the space he needs to grow while gently letting him know that you you"ll still be there for
him when he needs you.
Expect a lot from your child, just not everything. Except for health and safety problems, such as drug use
or careless driving; consider everything else open to discussion. If your child is unwilling to discuss something,
don"t insist he tell you what"s on his mind. The more you insist, the more likely that he"ll clam up. Instead, let
him attempt to solve (解决) things by himself. At the same time, remind him that you"re always there for him
should he seek advice or help. Show respect for your teenager"s privacy (隐私). Never read him his mail or
listen in on personal conversions.
Teach your teenager that the family phone is for the whole family. If your child talks on the family"s
telephone for too long, tell him he can talk for15 minutes, but then he must stay off the phone for at least an
equal period of time. This not only frees up the line so that other family members can make and receive calls,
but teaches your teenager moderation (节制). Or if you are open to the idea, allow your teenager his own
phone that he pays for with his own pocket money or a part-time job
B. how to respect a teenager
C. how to understand a teenager
D. how to help a teenager grow up
B. show respect
C. refuse to talk
D. seek help
B. to pay for his own telephone
C. to share the phone quickly
D. to answer the phone quickly
B. Give him advice only when necessary
C. Let him have his own telephone
D. Not talk about personal things with him
global economic crisis awakening a public thirst for knowledge about how the financial system works.
Applications for degree courses beginning this autumn were up by 15% this January, according to
UCAS, the Universities and Colleges Admissions Service. A spokesman for the Royal Economic Society
said applications to do economics at A-level were also up.
Professor John Beath, the president of the society and a leading lecture at St Andrews University,
said his first-year lectures-which are open to students from all departments-were drawing crowds of 400,
rather than the usual 250.
"There are a large number of students who are not economics majors, who would like to learn something
about it. One of the things I have done this year is to relate my teaching to contemporary events in a way
that one hasn"t traditionally done." He added.
University applications rose 7% last year. But there were rises above average in several subjects. Nursing
saw a 15% jump, with people"s renewed interest in caters in the public sector (部门), which are seen as
more secure in economic crisis.
A recent study showed almost two thirds of parents believed schools should do more to teach pupils
about financial matters, and almost half said their children had asked them what was going on, although a
minority of parents felt they did not understand it themselves well enough to explain.
Zack Hocking, the head of Child Trust Funds, said:"It"s possible that one good thing to arise from the
downturn will be a generation that"s financially wiser and better equipped to manage their money through
times of economic uncertainty."
B. connected with the present situation
C. open to both students and their parents
D. warmly received by economics
B. higher pay
C. fewer applications
D. better reputation
B. more students should be admitted to universities
C. the teaching of financial matters should be strengthened
D. children should solve financial problems themselves
B. have access to better equipment
C. confide about their future careers
D. get jobs in Child Trust Funds
B. Economics is attracting an increasing numbers of students.
C. college students benefit a lot from economic uncertainty.
D. parents are concerned with children"s subject selection.
adults. That"s unfortunate, because saying hello is more than just saying hello-it is recognition of another"s
worth. How might the world change-how might we change-if we mastered this word? To find out, I spent
one month saying hello to every person I met. Here"s what I"ve learned.
[2] It can boost (促进) productivity. In one of the few studies ever done on this subject, Allan, an
assistant professor of special education at Oklahoma State University, had middle school teachers greet their
students individually each morning. This exchange of greetings raised the kids" productivity. School went
from impersonal to personal, and that resulted in more class participation and better grades.
[3] Environments influence friendliness. One study found that people in the city were kiss likely to one
hands with a stranger than those in the countryside. And researchers say, pleasure environments generally
encourage more smiles and hellos than unpleasant ones. My experience was similarly. Whatever the reason,
my urban hellos were answered far less often than my rural one. Similarly, people in vacation spots, like the
Jersey Shore, were far friendlier than those hurrying work downtown.
[4] It"s a form of universal health insurance. It"s impossible to say hello without smiling. And smiling has
been shown to lower blood pressure, relieve stress and boost happiness. Apparently, a smile creates a similar
effect in the recipient (接受者).
[5] So maybe we can make the world a better place by _____. After a month of doing it. I feel lighter
and more connected and I have a better sense of well-being.
__________________________________________________________________________________
2. Which sentence in the text is the closest in meaning to the following one? Teachers and students got
friendlier so that the students became more active in learning and scored higher in tests.
__________________________________________________________________________________
3. Fill in the blank in Paragraph 5 with proper words. (within 5 words)
__________________________________________________________________________________
4. List three effects of smiling on health according to the text. (within 8 words)
①__________ ②__________ ③___________
5. Translate the underlined sentence in Paragraph 3 Chinese.
__________________________________________________________________________________
- 1①终边相同的角的同名三角函数的值相等;②终边不同的角的同名三角函数的值不等;③若,则是第一,二象限的角; ④若,则;⑤
- 2某西方学者评价一位著名思想家,认为他“既是1688年英国革命的首要辩护人,又是美国和法国革命的先驱”。这位思想家是:A.
- 3在等差数列中,,则的值为( )A.2B.3C.4D.5
- 4观察下列各式你会发现什么规律?3×5=15,而15=42-15×7=35,而35=62-1…11×13=143,而143
- 5图为“四幅海峡轮廓图”。读图完成21—23题。小题1:图中海峡沿岸气候具有冬湿夏干特点的是 ( )A.①②B.②③C.
- 6功是力与物体在力的方向上通过距离的乘积,功的单位是( )A.瓦/WB.焦/JC.牛/ND.安/A
- 7四大发明是中国人民带给世界最大的贡献。其中对世界文化传播有得要影响的是[ ]A.造纸术 指南针B.火药 指南
- 8如图,在⊙O中,直径AB与弦CD相交于点P,∠CAB=40°,∠APD=65°.(1)求∠B的大小;(2)已知AD=6求
- 9如图所示,电流从A点分两路通过对称的半圆支路汇合于B点,在圆环中心O处的磁感应强度为A.最大,垂直纸面向外B.最大,垂直
- 10在托盘天平的两盘里,各放等质量、等质量分数的稀H2SO4,天平平衡。下列反应后仍然使天平平衡的是 [ ]A.
- 1若最简二次根式233m2-2与n2-14m2-10是同类二次根式,求m、n的值.
- 2读“经纬网”图完成下列问题.(1)A点的经度是______,纬度是______.B点的经度是______,纬度是____
- 3读图回答下列问题。(1)图中B国家的农业类型以________农业为主,主要的粮食作物是________,经济作物是__
- 4To the students of Class3◆Examinations start on June22nd and
- 5A,B两地相距240千米,火车按原来的速度行驶需要4小时,火车提速后,速度比原来加快30%,那么提速后只需要( )A.
- 6如果在“百度”搜索引擎中输入“印象派”“向日葵”“扑向太阳的画家”等文字,其指向的艺术家是A.贝多芬 B.毕加索 C.达
- 7(x2+1)2-3(x2+1)-4=0,方程的实数根有( )A.1个B.2个C.3个D.4个
- 8如图,A、B、C、D、E各代表铁、水、三氧化硫、盐酸和氢氧化钡中的一种物质.在常温下,相连环物质之间能发生反应,不相连环
- 9下图是被子植物的生长示意图,请根据图及有关知识回答下列问题。(1) 一粒种子能够萌发长成一个植物体,主要原因是种子中具有
- 10我们每天都与化学变化打交道,以下叙述中没有发生化学变化的是( )A.吃进的食物一段时间被消化了B.课外体育活动时,呼吸