For hundreds of years humans have dreamt of finding life on distant planets. Now the hope of discovering real evidence of life has greatly increased
NASA’s Mars detector (探测器), Opportunity, succeeded in finding signs that water once existed on the planet. Opportunity landed on Mars in January. Scientists now believe that the planet could once have supported life.
This discovery was chosen by Science, one of the world’s leading magazines, as the most important scientific achievement of 2004 last Friday
“This little, wheeled, one-armed box went around another planet and has done something no human has ever managed,” according to Science. “It has discovered another place in the universe where life could once have existed.”
“Although we still can’t say that life could have existed in this environment, it is now certain that there was water on Mars,” said Steve Squyres, one of the scientists working on the Mars mission. The evidence comes from pictures and chemical readings taken by Opportunity. It includes marks on rocks like those caused by flowing water on Earth and salty chemicals like those found in dried-out sea-beds. Scientists said the new evidence proved beyond doubt that water has been existed on Mars. But it is still unknown whether the water on Mars was like an ocean or just ice.
While Opportunity has not found any signs of life, the presence of water means life is possible. “In everything we know about life on Earth, there is no example without liquid water,” Squyres said. “So water is important for the search for life on Mars.”
Researchers agree that a future mission (任务) should bring back physical samples (样品). But some scientists worry about the risk that this could introduce dangerous foreign creatures to Earth. “The problem here is how to get the samples back,” Squyres replied. “I think it is our responsibility to limit any risk.”
1. ________ prove that water existed on Mars.
A. The physical samples with salty chemicals
B. The marks on rocks and salty chemicals
C. Scientific achievements of 2004
D. Creatures from Mars
2. Which of the following is true according to the text?
A. It is now certain that there was water on Mars.
B. The water on Mars was like an ocean.
C. Evidence of life on Mars has been found.
D. Search for life on Mars is a great risk to humans.
3. How did scientists draw the conclusion that there was water on Mars?
A. The world’s leading magazine has announced the fact.
B. Scientists have taken many pictures and chemical readings on the Mars.
C. Astronauts have got some rocks from Mars.
D. Scientists have made a study of the pictures and readings sent back by Mars detector.
4. It can be inferred that, if the creatures from Mars came to Earth, ________.
A. they would be kind to humans
B. they would be cruel to humans
C. they would be a great danger to Earth
D. it would be hard to say whether it would be a good news or bad news
Teens don’t understand the big fuss (小题大做). As the first generation to grow up in a wired world, they hardly know a time when computers weren’t around, and they eagerly catch the chance to spend hours online, chatting with friends. So what?
But researchers nationwide are increasingly worried that teens are becoming isolated (孤寂), less skillful at person-to-person relationships , and perhaps numb (麻木) to the cheatings that are so much a part of the e-mail world . “And a teen’s sense of self and values may be changed in a world where personal connections can be limitless,” said Sherry Turkle .
Another researcher , Robert Kraut , said he’s worried about the “opportunity costs” (机会成本)of so much online time for youths . He found that teens who used computers, even just a few hours a week, showed increased signs of loneliness and social isolation. “Chatting online may be better than watching television , but it’s worse than hanging out (闲逛) with real friends,” he said .
Today’s teens, however, don’t see anything strange in the fact that the computer takes up a central place in their social lives. “School is busy and full of pressure. There’s almost no time to just hang out,” said Parker Rice, 17. “Talking online is just catch-up time.”
Teens say they feel good about what they say online or taking the time to think about a reply. Some teens admit that asking someone for a date, or breaking up, can be easier in message form, though they don’t want to do so. But they insist there’s no harm.The researchers argue that .
| A．nothing is wrong with teens’ chatting online |
| B．teens may develop a different sense of values |
| C．teens can manage their social connections |
| D．spending hours online does much good to teens |
The text mainly deals with .
| A．teens’ pleasant online experience |
| B．teen’s computer skills and school work |
| C．different opinions on teen’s chatting online |
| D．the effects of the computer world on teens |
Teens think that talking online can help them .
| A．use computers properly |
| B．improve their school work |
| C．develop an interest in social skills |
| D．reduce their mental pressures |
The purpose of the text is to .
| A．draw attention to teens’ computer habits |
| B．describe computer research results |
| C．suggest ways to deal with problem teens |
| D．discuss problems teens have at school |
Adrian’s “Amazing Race” started early when his parents realized that he, as a baby, couldn’t hear a thing, not even loud noises. In a special school for the hearing-impaired (听觉受损的)，he learned sign language and got to mix with other disabled children. However, the sight of all the disabled children communicating with one another upset his mother. She wanted him to lead a normal life. So after speaking to an advisor, she sent him to private classes where he learned to read lips and pronounce words.
Later on, Adrian’s parents decided to send him to a regular school. But the headmaster tried to prevent them from doing so, saying regular school couldn’t take care of a special needs students. His parents were determined to take the risk and push him hard to go through his work everyday because they wanted to prove that, given the opportunity, he could do anything. Adrian made the grade and got accepted. It was a big challenge. The pace（节奏）was faster so he had to sit at the front of the class and really pay attention to the teacher, which wasn’t always easy. But he stuck to it and did a lot of extra work after school.
The efforts made by Adrian and his parents paid off. Adrian graduated with good grades and got into a top high school. He also achieved a lot in life outside school. He developed a love for the outdoors and went to Nepal to climb mountains. He even entered the World Yacht Race 05/06--- being the first hearing-impaired Asian to do so.
But none of these achievements would have been possible without one of the most important lessons from his mother.” “If you believe in yourself and work hard, you can achieve great results.” She often said.How did Adrian communicate with other children in the special school?
| A．By speaking. | B．By making loud noises. |
| C．By reading lips | D．By using sign language. |
Adrian’s parents decided to send him to a regular school because .
| A．they wanted to prove the headmaster wrong |
| B．they wanted him to live a normal life |
| C．he wouldn’t mix with other disabled children |
| D．he wasn’t taken good care of in the special school |
How did Adrian finally succeed in his study?
| A．He did a lot of outdoor activities. |
| B．He was pushed hard to study every day. |
| C．He worked very hard both in and after class |
| D．He attended private classes after school. |
Why is Adrian’s life described as an “Amazing Race”?
| A．He did very well in his study |
| B．He succeeded in entering a regular school |
| C．He reached his goals in spite of his disability |
| D．He took part in the World Yacht Race 05/06 |
I travel a lot, and I find out different “styles” of directions every time I ask “How can I get to the post office?”
Foreign tourists are often confused in Japan because most streets there don’t have names; in Japan, people use landmarks (地标) in their directions instead of street names. For example, the Japanese will say to travelers, “Go straight down to the corner. Turn left at the big hotel and go past a fruit market. The post office is across from the bus stop.”
In the countryside of the American Midwest, there are not usually many landmarks. There are no mountains, so the land is very flat; in many places there are no towns or buildings within miles. Instead of landmarks, people will tell you directions and distances. In Kansas or Iowa, for example, people will say, “Go north two miles. Turn east, and then go another mile.”
People in Los Angeles, California, have no idea of distance on the map; they measure distance in time, not miles. “How far away is the post office?” you ask. “Oh,” they answer, “it’s about five minutes from here.” You say, “Yes, but how many miles away is it?” They don’t know.
It’s true that a person doesn’t know the answer to your question sometimes. What happens in such a situation? A New Yorker might say, ‘Sorry, I have no idea.” But in Yucatan, Mexico, no one answers “I don’t know.” People in Yucatan believe that “I don’t know” is impolite, They usually give an answer, often a wrong one. A tourist can get very, very lost in Yucatan!When a tourist asks the Japanese the way to a certain place they usually _________
| A．describe the place carefully |
| B．show him a map of the place |
| C．tell him the names of the streets |
| D．refer to recognizable buildings and places |
What is the place where people measure distance in time?
| A．New York. | B．Los Angeles. | C．Kansas. | D．Iowa. |
People in Yucatan may give a tourist a wrong answer ________
| A．in order to save time | B．as a test | C．so as to be polite | D．for fun |
What can we infer from the text?
| A．It’s important for travelers to understand cultural differences. |
| B．It’s useful for travelers to know how to ask the way properly. |
| C．People have similar understandings of politeness. |
| D．New Yorkers are generally friendly to visitors. |
Who do you think was the most important woman of the past 100 years?
Jane Addams (1860 - 1935)
Addams helped the poor and worked for peace. She created shelters, education opportunities and services for people in need. In 1931, Addams became the first American woman to win the Nobel Peace Prize.
Rachel Carson (1907 - 1964)
Rachel Carson was born in the rural river town of Springdale, Pennsylvania in America. The popular 1962 book “Silent Spring” by Rachel Carson made people realize the dangers and the harmful effects (影响) of pollution on humans and on the world’s lakes and oceans.
Angela Merkel (1954 - )
In 2005, Germans chose Angela Merkel as their first woman head of the country. She had been a scientist in the past. As Germany’s leader, she has had an effect on the whole world.
Sandra Day O’Connor (1930 - )
When Sandra Day O’Connor finished her class at Stanford Law School, in 1952, she could not find work because she was a woman. However, she became the first woman to join the U.S. Supreme Court (最高法院) in 1981 after years of hard work.
Margaret Thatcher (1925 - 2013 )
In 1979, Margaret Thatcher became Britain’s first woman Prime Minister (首相). She served until 1990, which made her the first British leader to serve three terms in a row. Because of her high standards and strong will, people called her Britain’s Iron Lady.
Marie Curie (1867-1934)
Polish-born scientist Marie Curie discovered that some types of metal give off energy called radiation (辐射能). Her research led to new medical treatments and arms. She received the Nobel Prize in Physics in 1903 and in Chemistry in 1911. Who once won the Nobel Prize?
| A．Jane Addams and Marie Curie. |
| B．Jane Addams and Margaret Thatcher. |
| C．Marie Curie and Angela Merkel. |
| D．Marie Curie and Rachel Carson. |
We can infer from the text that Rachel Carson worked to _____.
| A．help the poor |
| B．spread geographic knowledge |
| C．protect the environment |
| D．protect the rights of women |
What do Angela Merkel and Margaret Thatcher have in common?
| A．Both of them were scientists before coming to power. |
| B．Both of them are the first woman head of their country. |
| C．Both of them are famous for being strict. |
| D．Both of them have worked for three terms. |
It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives for only three to five minutes. More often the doctors can't fix the damage. Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain.
Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain.
Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, then he operated on them. He made the monkeys' blood go through a machine. The machine cooled the blood. Then the machine sent the blood back to the monkeys' brains. When the brain's temperature was 10°C, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them.The biggest difficulty in operating on the damaged brain is that _______.
| A．the time is too short for doctors |
| B．the patients are often too nervous |
| C．the damage is extremely hard to fix |
| D．the blood-cooling machine might break down |
The brain operation was made possible mainly by _______.
| A．taking the blood out of the brain |
| B．trying the operation on monkeys first |
| C．having the blood go through a machine |
| D．lowering the brain' s temperature |
With Dr. White's new idea, the operation on the damaged brain _______.
| A．can last as long as 30 minutes |
| B．can keep the brain' s blood warm |
| C．can keep the patient' s brain healthy |
| D．can help monkeys do different jobs |
What is the right order of the steps in the operation?
a. send the cooled blood back to the brain b. stop the blood to the brain
c. have the blood cooled down d. operate on the brain
| A．a,b,c,d | B．c,a,b,d | C．c, b, d, a | D．b, c, d, a |