We have all experienced days when everything goes wrong. A day
Things can go wrong on a big scale,
Life in the Clear
Transparent animals let light pass through their bodies the same way light passes through a window. These animals typically live between the surface of the ocean and a depth of about 3,300 feet-as far as most light can reach. Most of them are extremely delicate and can be damaged by a simple touch. Sonke Johnsen, a scientist in biology, says, “These animals live through their life alone. They never touch anything unless they’re eating it, or unless something is eating them.”
And they are as clear as glass. How does an animal become see-through? Ifs trickier than you might think.
The objects around you are visible because they interact with light. Light typically travels in a straight line. But some materials slow and scalier(散射) light bouncing it away from its original path. Others absorb light, stopping it dead in its tracks. Both scattering and absorption make a.n object look different from other objects around it, so you can see it easily.
But a transparent object doesn't absorb or scatter light, at least not very much. Light can pass through it without bending or stopping. That means a transparent object doesn't look very different from the surrounding air or water. You don't see it- you see the things behind it.
To become transparent, an animal needs to keep its body from absorbing or scattering light. Living materials can stop light because they contain pigments(色素) that absorb specific colors of light. But a transparent animal doesn’t have pigments, so its tissues won’t absorb light. According to Johnsen, avoiding absorption is actually easy. The real challenge is preventing light from scattering.
Animals are built of many different materials—skin, fat, and more—and light moves through each at a different speed. Every time light moves into a material with a new speed, it bends and scatters. Transparent animals use different tricks to fight scattering. Some animals are simply very small or extremely flat. Without much tissue to scatter light, it is easier to be see-through. Others build a large, clear mass of non-living jelly-like(果冻状的) material and spread themselves over it.
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A.Review the details of all her lessons. | B.Compare notes with his classmates. |
C.Talk with her about his learning problems. | D.Focus on the main points of her lectures. |
A.He had to reject their request. | B.He felt sorry for the other students. |
C.He agreed to consider their request. | D.He regretted that he had said “Yes”. |
A.Rules restricting smoking. | B.Ways to quit smoking. |
C.Smokers’ health problems. | D.Dangers of smoking. |
A.He’s going to visit a photo studio. | B.He’s just had his picture taken. |
C.He’s on the way to the theater. | D.He’s just returned from a job interview. |
8 . Is loyalty in the workplace dead?
Just recently, Lynda Gratton, a workplace expert, proclaimed that it was. In The Financial Times, she said that it had been “killed off through
It’s sad if this good virtue is now out of place in the business world. But the situation may be more
Fifty years ago, an employee could stay at the same company for decades, said Tammy Erickson, an author and work-force consultant. Many were
Now many companies cannot or will not hold up their end of the bargain, so why should the employees hold up theirs? Given the opportunity, they’ll take their skills and their portable retirement accounts elsewhere. These days, Ms. Gratton writes,
Ms. Erickson says that the quid pro quo (交换物,报酬) of modern employment is more likely to be: As long as I work for you, I promise to have the relevant skills and
For some baby boomers, this
A longtime employee who is also productive and motivated is of enormous value, said Cathy Benko, chief talent officer at Deloitte. On the other hand, she said, “You can be with a company a long time and not be highly committed.”
Ms. Benko has seen her company shift its
Then there are the effects of the recent recession. Many people - if they haven’t been
If the pendulum(摇摆不定的事态或局面) shifts, how will businesses persuade their best employees to stay?
Loyalty may not be what it once was, but most companies will still be better off with at least a core of people who stay with them across decades.
If loyalty is seen as a
A.tightening | B.lengthening | C.shortening | D.loosening |
A.complicated | B.confused | C.difficult | D.conservative |
A.confine | B.convince | C.identify | D.define |
A.guaranteed | B.provided | C.supplemented | D.rewarded |
A.belief | B.trust | C.confidence | D.tolerance |
A.occupy | B.engage | C.sacrifice | D.involve |
A.rightly | B.immediately | C.exactly | D.fairly |
A.difference | B.exchange | C.shift | D.modification |
A.assuming | B.ensuring | C.assuring | D.approving |
A.focus | B.mind | C.faith | D.importance |
A.laid off | B.employed | C.valued | D.supported |
A.Salary | B.Money | C.Loyalty | D.Credit |
A.However | B.Rather | C.Therefore | D.Otherwise |
A.promise | B.compliment | C.commitment | D.command |
A.interest | B.sake | C.disadvantage | D.benefit |
9 . Volunteering Abroad
The following Important Adult Gap Year Questions will answer something you need to know about volunteering abroad
When is the best time to volunteer?
There is no best time to volunteer and most volunteer programmes run all year round. The main question will be climate and volunteer numbers. Ask when the busier and quieter periods are if you would like more or less company to volunteer alongside. Summer months will be popular with students and teachers, whereas between October and May you should expect to share your experience with maturer people of all ages and the self-employed whose business might be slow during winter months. It is not uncommon for the average age on a volunteer project in January to be between 40 and 70.You may also want to check whether it will be summer or winter at your destination. July is the middle of winter in the southern hemisphere.
Do I need experience?
Unless you would like to volunteer in a hospital, you probably won’t need any experience. Many projects need help playing with the children, building new classrooms and mending rooms which are falling down, jobs where the volunteers can get stuck in for a week and can easily be taken over by another volunteer once they’ve left. These are often jobs which wouldn’t get done unless volunteers help.
Can I volunteer doing different things, or just one?
Most sending organisations prefer volunteers to be in the same place going to the same placement throughout their stay. However, each organisation does things differently. Some organisations will allow volunteers to spend a week in a different area of work while others provide a weekly schedule where the volunteer group is taken each day to different locations. Do check you have all the visas you need before your trip if you are travelling to more then one country as you may not be able to pick up visas along the way.
What if I don t speak the language
It’s a bit of a myth that you need to speak the local language to volunteer abroad. Providing there is someone locally who speaks both English and the local language and will be settling you in and supporting during your stay, you should have no problems. Even for teaching, knowing the language won’t give you an advantage. It can even get in the way. Often children will complain they don’t want to practise their own language with their teacher who endlessly repeats “hello” and “what’s your name?” They would rather learn how to say it in English!
1. Which of the following statements is TRUE about the best time to volunteer?A.It depends on whether the programme is in low season. |
B.Summer months are better than winter months |
C.The location of your destination matters a lot |
D.You can volunteer throughout the year as you like |
A.ask the sending organisations to help you enter those countries |
B.make sure that you already have all the visas needed |
C.pick up all the visas needed one by one along the way |
D.find some locals to take you across the borders |
A.academic paper | B.scientific journal |
C.magazine | D.fiction |