Jimmy is an automotive mechanic, but helost his job a few months ago. He has good heart, but always feared applyingfor a new job.

One day, he gathered up all his strengthand decided to attend a job interview. His appointment was at 10 am and it wasalready 8:30. While waiting for a bus to the office where he was supposed to beinterviewed, he saw an elderly man wildly kicking the tyre(轮胎） of hiscar. Obviously there was something wrong with the car. Jimmy immediately wentup to lend him a hand. When Jimmy finished working on the car, the old manasked him how much he should pay for the service. Jimmy said there was no needto pay him; he just helped someone in need, and he had to rush for aninterview. Then the old man said, “Well, I could take you to the office foryour interview. It's the least I could do. Please. I insist.” Jimmy agreed.

    Upon arrival, Jimmy found a long line ofapplications waiting to be interviewed. Jimmy still had some grease on himafter the car repair, but he did not have much time to wash it off or have achange of shirt. One by one, the applicants left the interviewer's office withdisappointed look on their faces. Finally his name was called. The interviewerwas sitting on a large chair facing the office window. Rocking the chair backand forth, he asked, “Do you really need to be interviewed?” Jimmy's heartsank. “With the way I look now, how could I possibly pass this interview?” hethought to himself.

    Then the interviewer turned the chairand to Jimmy's surprise, it was the old man he helped earlier in the morning.It turned out he was the General Manager of the company.

  “Sorry I had to keep you waiting, but Iwas pretty sure I made the right decision to have you as part of our workforcebefore you even stepped into the office. I just know you'd be a trustworthyworker. Congratulations!” Jimmy sat down and they shared a cup of well-deservedcoffee as he landed himself a new job.

    In today's world, English is the most wildly used language. It is our duty to learn English in the new situation of the reform and opening to the outside world. How can we master the English language? I'd like to give you some good advice.

    First, get interested in it. I enjoy listening to foreign friends talking when I was a child. At the same time I watched the English program Follow Me on TV. From then on, I kept on learning English. The more I learned, the more progress I made.

    Second, practice makes perfect. Many people study English very hard, but they are very shy to speak it in public, for they are afraid of making mistakes. Remember you have to make a mistake before you can correct it. A native English speaker makes mistakes sometimes, too.

    Third, the beginners should be encouraged to pay attention to idioms. The English language has many idioms. For example, you should say “ He is as strong as a cow.”

    Spring is coming, and it is time for those about to graduate to look for jobs. Competition is tough, so job seekers must carefully consider their personal choices. Whatever we are wearing, our family and friends may accept us, but the workplace may not.

    A high school newspaper editor said it is unfair for companies to discourage visible tattoos(纹身) nose rings, or certain dress styles. It is true you can't judge a book by its cover, yet people do “cover” themselves in order to convey certain messages. What we wear, including tattoos and nose rings, is an expression of who we are. Just as people convey messages about themselves with their appearances, so do companies. Dress standards exist in the business world for a number of reasons, but the main concern is often about what customers accept.

    Others may say how to dress is a matter of personal freedom, but for businesses it is more about whether to make or lose money. Most employers do care about the personal appearances of their employees, because those people represent the companies to their customers.

    As a hiring manager I am paid to choose the people who would make the best impression on our customers. There are plenty of well-qualified candidates, so it is not wrong to reject someone who might disappoint my customers. Even though I am open-minded, I can't expect all our customers are.

    There is nobody to blame but yourself if your set of choices does not match that of your preferred employer. No company should have to change to satisfy a candidate simply because he or she is unwilling to respect its standards, as long as its standards are legal.

    Mr. and Mrs. Gordon were sitting on the sand, reading their magazines. Mr. Gordon was too stingy (吝啬的) to rent (租) a chair. Their twelve-year-old daughter, Sandra, was playing at the water's edge. Suddenly a huge wave lifted Sandra up and carried her out to sea. Fortunately, a lifeguard (救生员) was on duty and he saw the wave carry Sandra away. He ran along the beach and dived into the sea. He swam quickly to where the girl was, with her head only just above the water, was shouting for help. She was very frightened. When the lifeguard reached her, she struggled with him, as drowning people often did. However, he was a skillful lifeguard and quickly took hold of her and swam with her back to the beach. By the time he reached it, Mr. and Mrs. Gordon had realized what had happened. They had run down to the water's edge. Neither of them could swim. They just stood in the shallow water, and worried about their daughter. Had the lifeguard reached her in time? Fortunately, he had. “That was quick work, young man,” Mr. Gordon said. He turned to his wife, “Give the lifeguard a dollar.” “A dollar!” Sandra cried. “Dad, how can you give him a dollar! He saved my life. I was half dead.” “Quite right, girl,”Mr. Gordon said, pleased by his daughter's awareness of the value of money. He turned to his wife again and said, “She's right. She was only half dead. Give him fifty cents.”

    (The New York Times, Oct.7) The 2019 Nobel Prize in physiology(生理学) or medicine was jointly awarded to three scientists — William G. Kaelin Jr., Peter J. Ratcliffe and Gregg L. Semenza — for their work on how cells sense and adapt to oxygen availability. The Nobel Assembly announced the prize at the Karolinska Institute in Stockholm on Monday.

    Their work established the genetic mechanisms(机制) that allow cells to respond to changes in oxygen levels. The findings have implications(启示) for treating a variety of diseases.

    Why did they win?

    "Oxygen is the lifeblood of living organisms(生物体)," said Dr. George Daley, dean of Harvard Medical School. "Without oxygen, cells can't survive." But too much or too little oxygen can be deadly. The three researchers tried to answer this question: How do cells regulate their responses?

    The investigators uncovered detailed genetic responses to changing oxygen levels that allow cells in the bodies of humans and other animals to sense and respond to fluctuations(波动), increasing and decreasing how much oxygen they receive.

    Why is the work important?

    The discoveries reveal the cellular mechanisms that control such things as adaptation to high altitudes and how cancer cells manage to hijack(攫取) oxygen. Randall Johnson, a member of the Nobel Assembly, described the work as a "textbook discovery" and said it would be something students would start learning at the most basic levels of biology education.

    "This is a basic aspect of how a cell works, and I think from that standpoint alone it's a very exciting thing." Johnson said.

    The research also has implications for treating various diseases in which oxygen is in short supply — including anemia, heart attacks and strokes — as well as for treatment of cancers that are fed by and seek out oxygen.

I traveled to Hawaii several months ago, in part to cover a story on invasive plants and animals and their impact on the state. As I worked on this story, I kept thinking about the fact that some plants and animals become uncontrollably invasive when they're brought into a new ecosystem, while others don't. For example, over the past two hundred years or so, there have been approximately 20, 000 non-native plant species either intentionally or accidentally brought into Hawaii alone. But only a small part of those plants — 200 species or so — have become invasive, threatening the environment, the economy, or human health. 

An example from Hawaii's forests: the invasive plant strawberry guava thrives as it gives off a chemical that prevents all other plants from growing nearby, and it also absorbs more water than native species. What makes these particular species so successful? Most of the reasons involve how a particular species interacts with its new environment. First, invasive species may be highly adaptable to a variety of climates. Second, they are usually quite fecund (多产的), which ensures that they can multiply rapidly. Third, they are usually threatening when it comes to resources like nutrients and space, easily crowding out their native counterparts (对应的物种). And finally, invasive species thrive when there are no natural enemies or pests in their new space.

How can we eradicate invasive species once they're in place? Unfortunately, it's nearly impossible to do that — conservationists would have to notice that the species is a problem before its population has established and grown to an uncontrollable size. Instead, most conservationists battling invasive species aim for control in key ecological pockets.

It is a constant battle, though, and humans are always playing catch-up. If you're thinking of planting unusual plants in your garden or keeping a foreign pet, perhaps reconsider and go for a native one. You never know when they might escape and tip over an ecosystem.