Mars Was Not Always Bitterly Cold
Scientists at the California Institute of Technology (Caltech) have reported evidence that Mars was warmer and wetter long ago than it is today. The Caltech scientists say they have directly established the temperature of Mars four billion years ago. At least, they established the surface temperature on part of the planet at that time. The researchers say it is the first such evidence to be discovered and presented.
The Caltech scientists say carbonate（碳酸盐） minerals formed on Mars at about eighteen degrees Celsius. They reached the finding after studying a meteorite（陨石） that had its beginnings near the Martian surface.
Today, the average temperature on Mars is sixty-three degrees below zero Celsius.
The finding was reported on the website of the National Academy of Sciences. Caltech Assistant Professor Woody Fischer helped to prepare the report. He says eighteen degrees Celsius is not especially cold or hot. He says this makes the finding extremely interesting. Knowing the temperature can give scientists an idea of the climate on Mars long ago. It can also help them decide whether the planet had liquid water. Spacecraft orbiting Mars have shown what appear to be rivers, lakebeds and mineral deposits. These pictures suggest that, at one time, water did flow there. Mars Rover vehicles and other spacecraft have confirmed the information.
Caltech Geology Professor John Eiler was another writer of the report. He says knowing the temperature of Mars from long ago provides valuable information. It shows that early in the planet's history, at least part of Mars could support a climate like that of Earth.
The meteorite the scientists examined is one of the oldest known rocks in the world. It is called the Allan Hills meteorite. Its name came from the place in Antarctica where it was found in 1984. The meteorite is believed to have blown loose from the Mars' surface when another space rock struck its "home." The underlined word “establish” in Paragraph 1 probably means “___________”.
| A．to set up |
| B．to make people accept a belief |
| C．to discover or prove |
| D．to start having a relationship with others |
How did the scientists reach the finding?
| A．By studying Allan Hills meteorite. |
| B．By using spacecraft orbiting Mars. |
| C．By studying minerals gathered on Mars |
| D．By studying a meteorite on the Martian surface. |
According to the fourth paragraph, what have spacecraft orbiting Mars done?
| A．Measuring the temperature of Mars. |
| B．Taking photos of the surface of Mars. |
| C．Confirming that there is water flowing on Mars. |
| D．Finding where human beings will probably land on Mars. |
How did Allan Hills meteorite get its name?
| A．From its original place on Mars. |
| B．From where it was found on the earth. |
| C．From the name of the scientist who found it. |
| D．From the name of the aircraft that discovered it |
Where can we most probably read this passage?
| A．In a biography of scientists. |
| B．In a geography magazine. |
| C．In an environment report. |
| D．In a science report. |
Why do human beings still risk their lives under ground and doing one of the dirtiest and most dangerous jobs in the world？It’s an increasingly urgent question，given the recent highprofile(引人注目的) mining accidents in Sago，W.Va.and Huntington，Utah.A small group of engineers and robotics experts look forward to a day in the nottoodistant future when robots and other technology do most of the dangerous mining work.
Robotic technology，in particular，holds much promise，McAteer says，especially when it comes to mapping mines and rescuing trapped miners—the special operations of the mining industry.
One of the first mining robots was developed five years ago at CarnegieMellon University’s Robotics Institute.It was called Groundhog and it looked like a golf cart.It used lasers(激光器) to “see” in dark tunnels and map abandoned mines—some of the most dangerous work in the business.
The latest design is called Cave Crawler.It’s a bit smaller than Groundhog，and even more advanced.It can take photos and video and has sensors mounted(增加) that can detect the presence of dangerous gases.Incredibly，the robot has a real sense of logic.If it comes across an obstacle it gets confused.It has to think through the process and where to go next，and sometimes it throws_a_fit just like a real person.
The biggest obstacle，though，is cost.The original research project was federally funded，but that money has dried up，and it’s not clear where future funding will come from. Partly for that reason，and partly because of advances in safety，mining is not nearly as dangerous as it was in the past.Since 1990，fatalities(致命性) have declined by 67 percent and injuries by 51 percent，according to the National Mining Association.
Some experts predict that robots in mines will serve much of the same function that they do in the automotive industry.The robots do the most repetitive and dangerous jobs，but don’t eliminate(消除) the need for human workers.The underlined phrase “throws a fit” in Paragraph 4 probably means “________”．
| A．gets angry | B．gets sick |
| C．becomes hungry | D．becomes cheerful |
We can infer from the last paragraph that ________.
| A．robots in mines will serve much in the automotive industry |
| B．there will be no need for human workers in mines |
| C．the mine robots will have a very bright future |
| D．robots in mines have a long way to go |
Which of the following is TRUE according to the text?
| A．Mining robots do most of the mining work at present. |
| B．Groundhog can discover the presence of dangerous gases. |
| C．Experts are trying to make robots save miners in danger. |
| D．Robots cannot do dangerous work in dark areas. |
What can be the best title for the text?
| A．Mining Accidents in America |
| B．Could Robots Replace Humans in Mines? |
| C．Cave Crawler，the Latest Robot |
| D．The Development of Robots |
One day in 1965，when I worked at View Ridge School in Seattle，a fourthgrade teacher approached me.She had a student who finished his work before all the others and needed a challenge.“Could he help in the library？” she asked.I said, “Send him along.”
Soon a slight，sandyhaired boy in jeans and a Tshirt appeared.“Do you have a job for me？” he asked.
I told him about the Dewey Decimal System(杜威十进分类法) for shelving books.He picked up the idea immediately.Then I showed him a stack(摞) of cards for longoverdue books that I was beginning to think had actually been returned but were misshelved with the wrong cards in them.He said，“Is it kind of a detective job？” I answered yes，and he became working.
He had found three books with wrong cards by the time his teacher opened the door and announced，“Time for break！”He argued for finishing the finding job；she made the case for fresh air.She won.
The next morning，he arrived early.“I want to finish these books，”he said.At the end of the day，when he asked to be a librarian on a regular basis，it was easy to say yes.He worked untiringly.
After a few weeks I found a note on my desk，inviting me to dinner at the boy’s home.At the end of a pleasant evening，his mother announced that the family would be moving to a neighbouring school district.Her son’s first concern，she said，was leaving the View Ridge library.“Who will find the lost books？” he asked.
When the time came，I said an unwilling goodbye.I missed him，but not for long.A few days later he came back and joyfully announced，“The librarian over there doesn’t let boys work in the library.My mother got me transferred back to View Ridge.My dad will drop me off on his way to work.And if he can’t，I’ll walk！”
I should have had an idea such focused determination would take that young man wherever he wanted to go.What I could not have guessed，however，was that he would become a genius of the Information Age：Bill Gates，tycoon(企业巨头) of Microsoft and America’s richest man.What was the author when the story happened?
| A．A teacher. | B．A librarian. |
| C．A detective. | D．A student. |
Why was the boy sent to the library by the fourthgrade teacher?
| A．He failed to finish his work on time. |
| B．He challenged the teacher in the class. |
| C．He disturbed all the other students in the class. |
| D．He needed something to do to challenge himself. |
What was the boy told to do on his first day in the library?
| A．To rearrange the books according to the new system. |
| B．To put those overdue books back to the shelves. |
| C．To find out the books with wrong cards in them. |
| D．To put the cards back in the longoverdue books. |
The boy got transferred back to View Ridge because ________.
| A．he didn’t get along well with the librarian in the new school |
| B．he was not allowed to work in the new school’s library |
| C．he missed his old schoolmates and teachers |
| D．he had to walk a long way to go to school |
Peanuts to This
Proudly reading my words，I glanced around the room，only to find my classmates bearing big smiles on their faces and tears in their eyes.Confused，I glanced toward my stonefaced teacher.Having no choice，I slowly raised the report I had slaved over，hoping to hide myself.“What could be causing everyone to act this way？”
Quickly，I flashed back to the day Miss Lancelot gave me the task.This was the first real task I received in my new school.It seemed simple：go on the Internet and find information about a man named George Washington.Since my idea of history came from an ancient teacher in my home country，I had never heard of that name before.As I searched the name of this fellow，it became evident that there were two people bearing the same name who looked completely different！One invented hundreds of uses for peanuts，while the other led some sort of army across America.I stared at the screen，wondering which one my teacher meant.I called my grandfather for a golden piece of advice：flip(掷) a coin.Heads—the commander，and tails—the peanut guy.Ah！Tails，my report would be about the great man who invented peanut butter，George Washington Carver.
Weeks later，standing before this unfriendly mass，I was totally lost.Oh well，I lowered the paper and sat down at my desk，burning to find out what I had done wrong.As a classmate began his report，it all became clear，“My report is on George Washington，the man who started the American Revolution.”The whole world became quiet！How could I know that she meant that George Washington?
Obviously，my grade was awful.Heartbroken but fearless，I decided to turn this around.I talked to Miss Lancelot，but she insisted：No redos；no new grade.I felt that the punishment was not justified，and I believed I deserved a second chance.Consequently，I threw myself heartily into my work for the rest of the school year.Ten months later，that chance unfolded as I found myself sitting in the headmaster’s office with my grandfather，now having an entirely different conversation.I smiled and flashed back to the embarrassing moment at the beginning of the year as the headmaster informed me of my option to skip the sixth grade.Justice is sweet！ (2012·北京，B)What did the author’s classmates think about his report?
| A．Controversial. | B．Ridiculous. |
| C．Boring. | D．Puzzling. |
Why was the author confused about the task?
| A．He was unfamiliar with American history. |
| B．He followed the advice and flipped a coin. |
| C．He forgot his teacher’s instruction. |
| D．He was new at the school. |
The underlined word “burning” in Para.3 probably means “________”．
| A．annoyed | B．ashamed |
| C．ready | D．eager |
In the end，the author turned things around ________.
| A．by redoing his task |
| B．through his own efforts |
| C．with the help of his grandfather |
| D．under the guidance of his headmaster |
Who give us life，raise us and are our constant support and wellwishers？Our mothers.That’s why millions of people across the world take Mother’s Day as an opportunity to express thanks and send best wishes to their moms.
However，the celebration of Mother’s Day is not the recent thing that many believe it to be.It was the ancient Greeks who started the tradition by celebrating their annual spring festival in honor of Rhea，the mother of many gods and goddesses.
Later，in the 1600s，Mothering Sunday came to be celebrated in England.On the fourth Sunday of Lent (大斋期)，children brought flowers and special fruitcakes to show their respect for their mothers.It may be the root of the modern Mother’s Day.
Thanks to the great efforts of Julia Ward Howe and Anna Jarvis，Mother’s Day became an official festival in the US.It is celebrated on the second Sunday in May.Later，many countries began to celebrate this day as Mother’s Day.
Today，Mother’s Day is an international festival honoring mothers.It is celebrated all over the world in different ways.In Western countries，the most common way is to treat mothers with breakfast in bed.Kids often allow their mothers to sleep till late in the morning while they prepare her favorite breakfast with their fathers.Some also make handmade gifts or buy beautiful carnations (康乃馨)．It is the day when you acknowledge your mothers contribution in your life and pay a tribute (礼品) to her，often with flowers and gifts.It complements Father’s Day，the celebration honoring fathers.
Today，Mother’s Day is a day celebrated on various days in many places around the world.Why do people across the world celebrate Mother’s Day?
| A．Because they want to express thanks and send best wishes to their mothers. |
| B．Because they want to express thanks and send best wishes to Rhea. |
| C．Because Mother’s Day is an official festival in the US. |
| D．Because Mother’s Day is an international festival. |
The modern Mother’s Day came from________.
| A．Greece | B．England |
| C．America | D．China |
From the passage we can learn that________.
| A．Rhea is the mother of many gods and goddesses of England |
| B．many people wrongly believe Mother’s Day has a short history |
| C．in America Mother’s day is celebrated on the fourth Sunday of Lent |
| D．on Mother’s day fathers have to get up early to prepare breakfast |
The passage mainly wants to tell us________.
| A．how to celebrate Mother’s day |
| B．what to do on Mother’s day |
| C．the historical change of Mother’s day |
| D．the meaning of Mother’s day |
Japan Earthquake and Tsunami(海啸)：How to Help
For readers interested in contributing to help victims of the earthquake and tsunami that struck Japan and the Pacific region，here is a list of contact information and links for some agencies that plan to provide relief.
THE JAPAN CENTER FOR INTERNATIONAL EXCHANGE
The Japan Center for International Exchange has set up the Japan NGO Earthquake Relief and Recovery Fund.Half of the money raised will go to support six Japanese NGOs currently at work in the disaster area and half will be retained to support the longer term recovery.
AMERICAN RED CROSS
Red Cross officials say donors can text REDCROSS to 90999 and a $10 donation will automatically be charged to donors’ phone bill，or donations can be made directly on its Web site.
B’NAI B’RITH INTERNATIONAL
To help the victims of the Japan earthquake and tsunami，donate online on the group’s secure Web site.
Or，by mail to：B’nai B’rith International Disaster Relief Fund，Attn：Japan Earthquake,2020 K Street，NW,7th Floor，Washington，D.C.,20006.
Or by phone：8005739057
CARE
CARE is one of the world’s largest private international humanitarian organizations.Their offices in Asia are on high alert(警戒) and have ensured that staff are informed of the tsunami warnings and other related developments.(Updated information on CARE’s work in Japan is available here.)
GLOBALGIVING.ORG
GlobalGiving is working with International Medical Corps，Save the Children，and other organizations on the ground to disburse(支付) funds to organizations providing relief and emergency services to victims of the earthquake and tsunami.Donors can text JAPAN to 50555 to give$10，and larger donations can be submitted on GlobalGiving’s Web site.
THE SALVATION ARMY
The Salvation Army has been providing food and shelter to Tokyo commuters(每日往返上班者) who were stranded when public transportation was interrupted by the earthquake.They are to send a team to Sendai，a city about 250 miles away from Tokyo，to assess the situation there.Text JAPAN or QUAKE to 80888 to make a $10 donation.(Make sure to respond “YES” to the thankyou message you receive.) Donations can also be made on the organization’s Web site or by calling 1800SALARMY.If you want to make donations to the victims by phone，you can text REDCROSS to ________.
| A．90999 | B．80888 |
| C．50555 | D．20006 |
What do we know about CARE from the text?
| A．It opened a Person Finder Page online. |
| B．It is the world’s largest humanitarian organization. |
| C．It raised much money to support six Japanese NGOs. |
| D．It warned its staff in Asia of the danger of tsunami. |
Which group can provide food and shelter?
| A．THE SALVATION ARMY. |
| B．GLOBALGIVING.ORG. |
| C．B’NAI B’RITH INTERNATIONAL. |
| D．AMERICAN RED CROSS. |
The underlined word “stranded” in the last paragraph can be replaced by “________”．
| A．abandoned | B．seperated |
| C．crashed | D．delayed |