Some wonderfully creative uses of X-rays have been in the world of art. But the most impressive one is to uncover what has been covered up. Details unfolded by an X-ray of a painting can't be seen any other way. For example, in the past, paintings were often repaired if small pieces of paint fell off the canvas(帆布).These repairs cannot be seen just by looking at the painting. It takes an X-ray to discover where the repairs have been made.
An X-ray of a painting is one of the best ways to tell if it was created by a famous painter or if it is a forgery. If there is a question as to whether an old master has painted a certain painting or not, X-rays are made and compared to those of paintings that are known to be original. If the brushstrokes(笔迹), for example, are shown to be totally different from those in other works done by a certain artist, then the painting is proved to be a fake copy.
Since modern paints are usually made from different materials than paints of hundreds of years ago, the image they leave on an X-ray film looks different. This is another way X-rays can be used to spot a forgery. A modern artist will try to make a forgery look hundreds of years old by painting dirty varnish on it or by using artificial means to get the varnish to look cracked. To the naked eye the forgery may look old, but when a careful study of the X-ray image is made, the deception is obvious.
It was common many years ago for an artist to finish a painting, decide it wasn't any good, and paint a completely different picture on top of it. Or artists would paint over others' work-it was their version of recycling. Taking an X-ray is the only way to find out if there is a picture underneath the picture you see with your eyes. Sometimes museums will be more interested in the painting beneath than the one on top, and will restore the older one by having the top layer painstakingly removed.
We interviewed a number of candidates, but none of them us.
In many countries, is not unusual for families of different backgrounds to live together in the shared space. , in the United States, this idea may still be considered strange.
But this type of housing, (call) co-housing, is gaining (popular) in the United States, too. Co-housing complexes are popping up across the country. For many people, this way of life is a relief to the busy modern lifestyle. A co-housing community has (private) owned houses and shared land. There is often a "common house" with a kitchen and dining room, meeting room, and maybe a workshop of library or music room. About 25 co-housing communities (build) in recent years, according to a report.
A co-housing complex is a place residents shop, cook, and eat together. They like (it) sense of shared community. Children have other kids to play , which many families like. Other residents like the feeling of living in a " village". Residents also say that they can live in co-housing for (little) money than they would pay for nearby apartments.
为了清除障碍,你必须尽力与你的竞争者做朋友。
Tips to stay safe and make smart choices
Even if you're a genius (天才) at school, you still might be lost when it comes to getting from point A to point B. Don't get caught in a strange place without these basic safety tips.
Know where you're going.
Before you set out in an unfamiliar area, go to Google Maps to plan your journey and print it out. Make sure that the location services are turned on your phone, just in case you get lost.
Know where your stuff is.
Never leave your backpack or shopping bags out of your sight. Carry your wallet in your front pocket or keep it close to your body. A fun day out can turn into the worst headache ever if you realize you've left something behind.
If you have the choice between a busy street and a deserted one, always pick the busy one. You are more likely to be attacked on dark, empty sidewalks than on ones with a crowd.
Travel in packs.
Don't go anywhere — especially an unfamiliar place — without a friend or two.
Don't let your music drown you out.
There's nothing wrong with listening to your iPod as you walk around town, but keep it at a low enough volume (音量) so you can still hear passing cars. Losing concentration puts you at risk from accidents, attacks and getting lost. Don't do it. Keep your head up and pay attention to the people and things going on around you.
A. Pick your streets smart.
B. Always choose your own ways.
C. Be sure you've got everything at all times.
D. Take out your phone and call the police.
E. This also goes for texting while walking.
F. You can also use your phone's GPS to map the route.
G. If you must go out alone, be sure to tell someone where you're going.
To err is human. To blame the other guy is even more human.
Common sense is not all that common.
Why tell the truth when you can come up with a good excuse?
These three popular misquotes (戏谑的引语) are meant to be jokes, and yet they tell us a lot about human nature. To err, or to make mistakes, is indeed a part of being human, but it seems that most people don't want to accept the responsibility for having made a mistake. They naturally look for someone else who could be responsible for the problem. Perhaps it is the natural thing to do. The original quote about human nature went like this: “To err is human, to forgive, divine (神圣的).” This saying mirrors an ideal: people should be forgiving of others' mistakes. Instead, we tend to do the opposite —— find someone else to pass the blame on to. However, taking responsibility for something that went wrong is a mark of great maturity.
Common sense is what we call clear thought. Having common sense means having a good general plan that will make things work well, and it also means staying with the plan. Common sense tells you that you take an umbrella out into a rainstorm, but you leave the umbrella home when you hear a weather forecast for sunshine. Common sense does not seem to be common for large organizations, because there are so many things going on that one person cannot be in charge of everything. People say that in a large company, “the right hand does not know what the left hand is doing.”
And what is wrong with a society that thinks that making up a good excuse is like creating a work of art? One of the common problems with making excuses is that people, especially young people, get the idea that it's okay not to be totally honest all the time. There is a corollary (直接推论) to that: if a good excuse is “good” even if it isn't honest, then where is the place of the truth?
注意:1.词数80左右;2.可适当增加细节,以使行文连贯。
请根据下面提示,写一篇短文。词不达意不少于50。
In your English class , the teacher shows you the following picture and asks the class to discuss it . Your classmates have different understandings .
Describe the picture and tell the class how you understand it
________ (know) basic firstaid techniques will help you respond quickly to emergencies.
Music should be taught routinely in schools because of the benefits ______ can have on the development of the brains of young children.
A. it B. that C. which D. one