In a surprising discovery about where higher life can survive, scientists have found a shrimp —— like creature and a jellyfish swimming beneath an Antarctic ice sheet.
About 180 meters below the ice where no light can get through, scientists had thought nothing much more than a few microbes (微生物) could exist.
That’s why a NASA team was surprised when they lowered a video camera to get the first long look at the underbelly of an ice sheet in Antarctica. A curious shrimp – like creature came swimming by and then parked itself on the camera’s cable. Scientists also pulled up a tentacle (触须) they believe came from a jellyfish.
“We were operating on the presumption that nothing’s there.” Said NASA ice scientist Robert Bindschadler. “It was a shrimp you’d enjoy having on your plate.”
“We were just gaga (狂热的) over it,” he said of the 7.5cm long, orange creature starring in their two – minute video. Technically, it’s not a shrimp. It’s a Lyssianasid amphipod, which is distantly related to the shrimp.
The video is likely to inspire experts to rethink what they know about life in harsh environments. And it has scientists thinking that if shrimp – like creatures can live below 180 meters of Antarctic ice in freezing dark water, what about other cold places? What about Europa, a frozen moon of Jupiter?
Cynan Ellis – Evans, a scientist of the British Antarctic Survey called the finding fascinating. He said it was possible the creatures swam in from far away and don’t live there permanently.
But Kim, who is a co-author of the study, doubts it. “The site in West Antarctica is at least 19 km from open seas. Bindschadler drilled a 20 cm – wide hole and was looking at a tiny amount of water. That means it’s unlikely that two creatures swam from great distances and were captured randomly in that small of an area,” she said.
Yet scientist were puzzled at what the food source would be for these creatures. While some microbes can make their own food out of chemicals in the ocean, complex life like the shrimp can’t, Kim said.
“So how do they survive? That’s the key question.” Kim Sai.
“It’s pretty amazing when you find a huge puzzle like that on a planet where we thought we know everything.” Kim said.
【小题1】 What does the underlined word “harsh” probably mean?

It is pretty much a one-way street. While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job. For some industrial scientists, however, the attractions of academia (学术界) outweigh any financial considerations.
Helen Lee took a 70% cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge. Her main reason for returning to academia mid-career was to take advantage of the greater freedom to choose research questions. Some areas of inquiry have few prospects of a commercial return, and Lee’s is one of them.
The impact of a salary cut is probably less severe for a scientist in the early stages of a career. Guy Grant, now a research associate at the Unilever Centre for Molecular Informatics at the University of Cambridge, spent two years working for a pharmaceutical (制药的) company before returning to university as a post-doctoral researcher. He took a 30% salary cut but felt it worthwhile for the greater intellectual opportunities.
Higher up the ladder, where a pay cut is usually more significant, the demand for scientists with a wealth of experience in industry is forcing universities to make the transition to academia more attractive, according to Lee. Industrial scientists tend to receive training that academics do not, such as how to build a multidisciplinary team, manage budgets and negotiate contracts. They are also well placed to bring something extra to the teaching side of an academic role that will help students get a job when they graduate, says Lee, perhaps experience in manufacturing practice or product development. “Only a small number of undergraduates will continue in an academic career. So someone leaving university who already has the skills needed to work in an industrial lab has far more potential in the job market than someone who has spent all their time on a narrow research project.”
【小题1】By “a one-way street” (Line 1, Para. 1), the author means ________.

You will spend hours at the gym training your body, but do you ever think about training your brain? Here are four ways to keep your brain mentally (脑力上地) active and healthy.
Play games
Your brain is a muscle just like the ones in the rest of your body. If you don’t use it, you will lose it. For example, doing a crossword puzzle (纵横填字游戏) once a day is a good way to give the brain the exercise it needs. This kind of puzzle is good at training different areas of the brain. But remember that when doing this puzzle, you should gradually increase the complexity (复杂度); otherwise, it will become repetitive (重复乏味的) and stop being mentally challenging.
Talk aloud
Although it might sound strange to you, talking aloud is a great way to boost your memory. A good exercise to try is counting to 99 in threes as fast as you can.
Be a team leader
If you find you can do your work very easily, you should find a new task. It is important that your job should be mentally challenging. Complex jobs are often more challenging and make the brain work a little harder.
Learn a language
A study found that, compared with those who could speak only one language, the people who could speak two languages had a slower rate of cognitive (认知能力) decrease. Learning a new language is very challenging and it makes sure that different areas of the brain have their lights on.
【小题1】What is the main idea of this passage?

Cheating is when a person misleads, deceives or acts dishonestly on purpose. 【小题1】If a basketball team is for kids under 8,it's cheating for a 9-year-old play on the team. At school, in addition to cheating on a test, a kid might cheat by stealing someone else's idea for a science project. 【小题2】This kind of cheating is called plagiarizing (抄袭).
【小题3】Jeff is doing it by sneaking answers to a test. And it's also cheating to break the rules of a game or contest or to pretend something is yours when it isn't. When people cheat, it's not fair to other people.
It's tempting(诱惑人的) to cheat because it makes difficult things seem easy, like getting all the right answer on the rest. 【小题4】And it won't help on the next test-unless the person cheats again.
【小题5】They want to get good grades but hate hard work. Other kids might feel like they can't pass the test without cheating. Even though there seems to be a "good reason" for cheating, cheating isn't a good idea.

Erik Weihenmayer was born with an eye disorder. As a child his  eyesight became worse and then, at the age of 13, he lost his sight  completely. However, he did not lose his determination to lead a  full and active life  Erik became an adventurer. He took up parachuting, wrestling and scuba diving. He competed in long-distance biking, marathons and  skiing. His favorite sport, thought, is mountaineering.  As a young man, Erik started to climb mountains. He reached the summit of Mount McKinley in 1995 and then climbed the dangerous  1000-metre rock wall of EI Capitan. Two years later, while climbing   Mount Kilimanjaro in Kenya with his girlfriend, they stopped for a  time at 13,000 feet above sea level－in order to get married. In 1999, he climbed Aconcagua, the tallest mountain in South America.  And then , on May 25, 2001, at the age of 33, Erik successfully completed the greatest mountaineering challenge of all. He climbed Mount Everest, the highest mountain in the world. Erik invented his own method for climbing mountains. He carries two long poles: one to lean on and the other to test the way ahead of  him. The climber in front of him wears a bell to guide him. Erik is  a good team member. He does his share of the job, such as setting up tents and building snow walls.  Although he could not enjoy the view, Erik felt the excitement of  being on the summit of Everest. He hopes that his success will change how people think about the blind. “When people think about a  blind person or blindness, now they will think about a person standing on the top of the world.

1.When was Erik born?

A. In 1967.        B. In 1995.       C. In 1968..         D. In 1969.

2.What was unusual about his wedding?

A. He got married on the summit of Mount McKinley.

B. He got married when climbing Mount Everest.

C. His wedding was held at 13,000 feet above sea level

D. His wedding was held after he prepared a lot.

3.What is Erik’s special method for climbing a mountain?

A. He takes his girlfriend with him.  B. He uses two long poles to help himself

C. He does his share of  the jobs.　  D. He keeps a good team around him.

4. Which of the following shows the right order of what happened?

a. He topped Mount McKinley.

b. He became blind.

c. He challenged Mount Everest.

d. He reached the peak of Kilimanjaro.

e. He climbed the rock wall of EI Capitan.

A. b a e d c 　　 B. b e d c a　      C. a b e d c 　     D. b a c d e