clean themselves?
Cats lick (舔) themselves to keep their fur clean. Have you ever watched a pet cat clean itself? Elephants
take baths much as you do. But instead of jumping into the tub (浴缸), they walk into a river or lake.
Pigs also like to roll around in water. This keeps them clean and cool. If there is no clean water, they will
roll in mud (泥) on a hot day. They do this to cool off. Pigs do not really like mud. They are happier in a nice,
clean pond (水池).
Bats have a funny way to keep clean. They lick their thumbs to clean their ears!
Guess how polar bears clean themselves. They use snow, of course!
Some animals take baths in dust instead of water! The wombat (毛鼻袋熊) is an Australian animal with
lots of fur. To get clean, it lies down. Then it covers itself with sand! Birds clean themselves in many ways.
Sometimes they wash in water. That"s why some people put birdbaths in their yard. At other times birds take
dust baths, just like wombats.
Birds also use their beaks (喙) to keep their feathers clean. They use their beaks the way you use a comb.
Sometimes a bird has itchy bugs (发痒的虫子) in its feathers. Birds may use ants to help them clean off
the bugs. A bird will lie down on an ant nest. Then the ants will crawl on the bird. The ants make a kind of
bug spray (喷雾) on the feathers;. Then the itchy bugs die!
Birds take baths in something else besides dust and ants! Some birds take "smoke baths" They sit on
chimneys. They wave their wings in the smoke!
B. why birds allow ants to crawl on their body
C. how animals cool off on hot days
D. how some animals keep clean
B. Lying down on ants.
C. Rolling in nice, thick mud.
D. Taking a bath in clean water.
B. Bats.
C. Wombats.
D. Ants.
from 23 percent of American beekeeping businesses. Causes of the occurrence, however, have remained a
puzzle.
Now, scientists from several universities and the United States Department of Agriculture say they have a
possible explanation for the bee decline (数量下降). It is a little known virus called Israeli acute-paralysis virus
(IAPV).The virus kills bees. Researchers in Israel first described it in 2004, but until now, bee experts haven"t
paid much attention to it.
When trying to find out why the bees were disappearing, a research team at Columbia University studied
bee communities, some with and others without decline. The research turned up large numbers of two types
of fungi (真菌) once believed of causing the bee decline. The research results, however, showed that the
fungi were almost as common in communities without a decline as they were in communities with a decline.
The research concluded that the two fungi probably weren"t the cause.
Studies of the presence of IAPV, however, showed more interesting information. In those studies, done
by a team at Pennsylvania State University in University Park, the virus showed up in 83 percent of samples
from communities with symptoms. Only five percent of samples from symptomless communities had it.
Scientists still don"t know whether IAPV can single-handedly cause the bee decline. They believe that even
if the virus is making communities sick, it could have a partner in crime. It"s possible, for instance, that insects
or chemicals in the environment weaken bees, making them more likely to catch IAPV.
Scientists are still trying to figure out how IAPV came to the United States. The United States now allows
bee products to be imported from Canada, Australia, and New Zealand. If it turns out that this trade is
spreading disease, the rules might eventually change.
B. is spread by a kind of fungi
C. is still not fully understood
D. is caused by the imported bee products
B. comparing
C. examining
D. investigating
B. the virus could also cause other damages
C. the virus is not the only cause for the bee decline
D. the virus may be caused by the polluted environment
B. A Virus-IAPV
C. Fungi and Virus
D. Disappearing Bees
Fruit"s not only good to eat, but it can also power this Fruit Digital Clock. This clock uses the scientific
principles on which modern electrical storage batteries are based. The acid from the fruit helps transmit an
electrical flow between two metal poles. The clock is priced at US $ 15 commencing any fresh fruit or
vegetable to the clock will make it work. The fruit is a clean, renewable source of electrical power.
USB vacuum
Do you know the dirtiest parts of your desk are probably your keyboard and mouse? Get a USB Mini
Vacuum with retractable (可伸缩的) cable and suck away all that junk. The US-made product is priced at
US $ 14.
SIM card reader
Making useful USB 2.0 multi-card reader even handier, this card can also read and write data to phone
SIM cards. It comes with SIM editing software. Download your phonebook to your computer. If you lose
your cell phone, you can store missing phone numbers in your new one the US-made IMOMO SIM card
+ Multi-Card Reader is priced at US $ 19 (152 yuan).
Beer in your ear
The beer barrel (桶)-shaped Naf Naf Hyp MP3 is a musical box that"s capable of playing radio, CDs and
cassettes. It"s got all the standard features of the typical clock-radio, but with the relaxing look of a big beer
barrel. The Danish product is priced at about US $ 130 (1040 yuan).
B. USB vacuum
C. SIM card reader
D. Naf Naf Hyp MP3
B. USB vacuum can be used to clean your house and yard.
C. With SIM card reader you won"t lose phone numbers.
D. Naf Naf Hyp MP3 can play radio, DVD and cassettes.
B. desk
C. keyboard
D. mouse
B. science reports on new high-technology
C. introduction of some kinds of musical boxes
D. advertisement for new products
B. remove data in phone SIM cards specially
C. help restore yur phone book in a new cell phone
D. transfer any file between a computer and a cell phone
totally unsuitable for human existence. People won"t have enough food supplies there, and the terrible
environment would make it impossible for them to live a long life. Besides, the journey won"t be safe. Can
anybody explain to me just why people would go to Mars, never to return?
Steve Minear, UK
Here are the things you can think of: the desire to explore a foreign and unique environment, the excitement
of being the first humans to open up a new world, the expectation of fame and glory…For scientists there is
another reason. Their observations and research will probably lead to great scientific achievements.
Donal Trollop, Canada
There are already too many people on the Earth. I think that sometime before the end of the century, there
will be a human colony (殖民地) on Mars. It will happen when people finally realize that two-way trips to the
red planet Mars are unnecessary. Most of the danger of space Flight is in the launches (发射) and landings.
Cutting the trip home would therefore reduce the danger of accidents, save a lot of money, and open the way
to building an everlasting human settlement on another world.
Enough supplies can be sent on ahead. And every two years more supplies and more people will be needed,
and Mars is far more pleasant than the other planets in the outer space.
Paul Davies. USA
B. to invite an answer to his question
C. to explain the natural state of Mars
D. to show his agreement on going to Mars
B. There are many reasons for going to Mars.
C. Scientists become famous by doing research on Mars.
D. It is possible to build an Earth-like environment on Mars.
B. two-way trips to Mars will be made safe soon
C. it is easy to reduce the danger and cost of flights to Mars
D. it is cheap to build an everlasting human settlement on Mars
B. Humans will find Mars totally unsuitable for living.
C. Humans can produce everything they need.
D. Humans can live longer in the colony on Mars.
my belongings will be packed up and shipped to the other side of the country.
I had never imagined, in my wildest dreams, that I would attend college in Ithaca, New York. I had had
my heart set on a university in California and of majoring in English.
Nearly all of my friends are staying in state, and I remember thinking to myself, when one friend said she
would be going to college in Virginia: Why would someone ever choose to move away from California?
But by a twist of fate, I received a letter from Ithaca College, inviting me to apply for a program in
communications. On a while, I decided to apply. What were the chances that I would be selected as a finalist?
If I hadn"t applied, I would have always regretted not trying. Yet secretly, I hoped that I wouldn"t be chosen.
But, as things turned out, I was offered one of the scholarships. I also received admission letters from the
other colleges I had applied to, all of which were California schools.
As I began to weigh my options, I wrote out a pro/con (利弊) list for each of my schools. I began to realize
that my reasons for wanting to go to certain schools in California were based on considerations of comfort.
It would be so reassuring to be close to my family and my home.
Then I began to think about the expensive tuitions (学费) and class shortages in the California public school
system. These issues were not likely to greatly improve in the next four years. Slowly, I came to the conclusion
that Ithaca was the ideal choice for me-culturally, academically and financially.
Fear of the unknown should not be a reason for shying away from opportunities. It might be difficult to
adapt to my new situation, but I am confident I have made the right decision
B. To tell readers what matters when applying to a college.
C. To share the author"s experience of choosing a college.
D. To compare the differences between Ithaca College and California schools.
B. she has a great interest in Ithaca College"s communications program
C. she was offered a scholarship by Ithaca College but not by colleges in California
D. she thinks that teaching and classes are better at Ithaca College than at California schools
B. The author is independent and likes adventure.
C. The author believes it will be easy to adapt to college life.
D. The author applied to Ithaca College because Ithaca College is much cheaper than California schools.
B. Not to let fear put her off something she wants.
C. That nothing we want in life can be achieved without effort.
D. Not to take any risks.
When people think of bullying (欺负), they sometimes think only of kids being pushed around. But being
called hurtful names is a kind of bullying too. Sometimes being called names can hurt almost as much as being
hit or shoved (推撞). Maybe the name-caller thought the names were funny, but name-calling is not funny at
all to the person who is being called those names. To help make kids realize how much name-calling can hurt,
school all over the U.S. are planning to mark No Name-Calling Week January26-30, 2009. No Name-Calling
Week started in 2004. The program was inspired by a novel for kids called The Misfits, written by James Howe.
It is about four best friends who are teased (取笑) at school about their height, their weight, what they say, and
how they look. The friends run for the school"s student union and say if they will try to stop all name-calling at
school. They lose the election but persuade their teacher to have a No Name-Calling Day to try to stop teasing.
This year, about 50 national organizations are supporting the sixth No Name-Calling Week. The project seeks
to focus national attention on the problem of name-calling in schools, and to provide students and educators
with the tools and inspiration to start a dialogue about ways to get rid of name-calling in their communities.
Many students in the U.S. report being teased at school. Last year during No Name-Calling Week, almost all of
the sixth graders at one New Jersey school said they had been bullied.
Ideas for celebrating No Name-Calling Week: Place a huge cardboard T-shirt outside the school gym or
cafeteria with a headline that reads, "Sign your name here if you"ve ever been bullied." Make bracelets (手镯)
to represent a commitment to not calling names. Create a "Kindness Chain." Each link on the chain explains
something kind that one student has done for another during No Name-Calling Week.
B. a matter of naughty behavior
C. a joke among students
D. a physical violence
B. gives them new names
C. says rude words about them
D. hits or shoves them
B. It came from a novel written by James Howe.
C. It was an idea put forward by a school master.
D. It was put forward at a student union election.
B. wearing T-shirt with the words No Name-Calling
C. reporting to teachers how you have ever been bullied
D. explaining why names should not be called
- 1补全对话。Ann: 1_____ you come from London? Kate: No, I 2_____ 3_
- 2【题文】设奇函数在上是增函数,且,则不等式的解集为
- 3下列说法正确的是( )A.水烧开了,揭开锅盖看到冒出的“白气”就是水蒸气B.水沸腾了,只要不断地加热,水的温度就可以不
- 4若a>2,则函数f(x)=x3-ax2+1在区间(0,2)上恰好有( )A.0个零点B.1个零点C.2个零点D.
- 5【题文】读“地貌素描或地质构造图”,回答下列各题。【小题1】下列说法正确的是( )A.甲图所示地貌在河流入海
- 6补全对话。Zhang Min-the monitor Lin Feng-a studentZ: Hi,
- 7平面直角坐标系中,若平移二次函数y=(x-2009)(x-2008)+4的图象,使其与x轴交于两点,且此两点的距离为1个
- 8女性的性腺是____,它能产生____和分泌____,阴道是____进入女性体内和____的通道;子宫是____的场所。
- 9一个圆形纸片,圆心为,为圆内异于的定点,是圆周上一动点,把纸片折叠使 与重合,然后抹平纸片,折痕为,设与交于,则的轨迹是
- 10完成句子 (9分)1. 我很高兴告诉你我的未来计划。 I am very happy _________________
- 1自动充电式电动车的前轮装有发电机,发电机与蓄电池连接。骑车者用力蹬车或电动车自动滑行时,发电机向蓄电池充电,将其他形式的
- 2如图,所有阴影部分四边形都是正方形,所有三角形都是直角三角形,已知正方形A、B、C的面积依次为2、4、3,则正方形D的面
- 3对下列句子运用的修辞方法判断正确的是 [ ]A.世间还能有比这更让人伤心的事情吗?(设问) B.如果生命是火,尊
- 4 I don’t know the meaning of this word; can you ______ it in
- 5已知函数f(x)=x3-x,(Ⅰ)求曲线y=f(x)在点M(t,f(t))处的切线方程;(Ⅱ)设a>0,如果过点(a,b
- 6如果要测量国际单位制中规定的三个力学基本物理量时,应该选用的仪器是( )A.米尺、弹簧测力计、秒表B.量筒、天平、秒
- 7阅读下列材料:(20分)材料一中国古代皇权消长示意图 材料二明
- 8用自己的语言解释下列问题:(1)一种彩票的中奖率为11000,你买1000张,一定中奖吗?(2)一种彩票的中奖率为五百万
- 9下图体现了浓郁的[ ]A.文人意趣B.民间风情C.质朴与浪漫D.王朝鼎盛气象
- 10下列《辛丑条约》的内容最能直接反映《扯线木偶》漫画寓意的是( )A.清政府拆毁大沽炮台B.清政府赔偿白银4.5亿两C