Article: Can you believe your eyes? A recent experiment suggests that the answer to that question may depend on your age. Martin Doherty, a psychologist at the University of Stirling in Scotland, led the team of scientists. In this experiment, Doherty and his team tested the perception  of some people, using pictures of some orange circles. The researchers showed the same pictures to two groups of people. The first group included 151 children aged 4 to 10, and the second group included 24 adults aged 18 to 25. The first group of pictures showed two circles alone on a white background. One of the circles was larger than the other, and these people were asked to identify the larger one. Four-year-olds identified the correct circle 79 percent of the time. Adults identified the correct circle 95 percent of the time. Next, both groups were shown a picture where the orange circles, again of different sizes, were surrounded by gray circles. Here's where the trick lies in. In some of the pictures, the smaller orange circle was surrounded by even smaller gray circles -- making the orange circle appear larger than the other orange circle, which was the real larger one. And the larger orange circle was surrounded by even bigger gray circles -- so it appeared to be smaller than the real smaller orange circle. When young children aged 4 to 6 looked at these tricky pictures, they weren't fooled -- they were still able to find the bigger circle with roughly the same accuracy as before. Older children and adults, on the other hand, did not do as well. Older children often identified the smaller circle as the larger one, and adults got it wrong most of the time. As children get older, Doherty said, their brains may develop the ability to identify visual context. In other words, they will begin to process the whole picture at once: the tricky gray circles, as well as the orange circle in the middle. As a result, they're more likely to fall for this kind of visual trick. Question: According to the passage, we can know that  _  . Yes or no, is the answer "a circle surrounded by bigger ones looks smaller than its real size"?
No


Article: As is known, healthy foods can help save your life.Now, here is a list of healthy foods that can save your memory.It is best that every person knows what he eats, as he takes in, can make or break himself, in terms of health. Fish is helpful in regaining back the kind of memory that a person once has.Eating fish can help you save the trouble of forgetfulness.Vegetables rich in fiber and other dark and green leafy kinds are very suitable for people who want to avoid mental blocks.These foods contain high units of vitamin E. Another food that is considered having different effects on preventing this brain deficiency  is avocado , which is also rich in vitamins E and C.It is really good to know these healthy foods that can save your memory are always at hand so as to help you in your fight against diseases.Sunflower seeds are regarded as Vitamin C-powered seeds and also give you enough energy. As for red wine, do not over consume it, as it is said to have to be taken in moderate amounts in order to help the body.Over-drinking can cause illness and like anything else.This is considered as one of the healthy foods that can save your memory; alcohol can otherwise lose it. It is better to consume color1ed bread, rice and whole grains for you t o get the best out of fiber.These foods can lower the body' s risk of being infected with Alzheimer' s disease. Knowing the healthy foods that can save your memory is living the life that you have longed and desired.Among the others, the best, of course, is exercise.Taking in different kind of exercises, physical activities or sports can keep both your body and mind healthy Question: To discourage mental disease from happening,_. Yes or no, is the answer "it is best to eat vegetables high in fiber"?
Yes


Q: Article: The well - known Rushmore National Monument in the United States is built on the Rush More Peak, 1829 meters above sea level, of the Black Hills in the southwest of South Dakota. It is a group of huge stone statues of four American presidents, George Washington, Thomas Jefferson,Abraham Lincoln and Theodore Roosevelt. President Washington is the founding father of the country;the 3rd President Jefferson drafted the U. S. Declaration of Independence;the 16th President Lincoln issued the Emancipation Proclamation and the26th President Roosevelt protected the average people's right to compete fairly with trusts. All of them,made outstanding achievements for their country. They were pioneers of U. S. history. The stone statues of presidents were built at the suggestion of an historian in the State of Dakota,with a view to carrying forward the U. S. pioneering spirit everlastingly. The statues are 18 meters high. They are the highest and greatest realistic stone statues in the world,taller than a 6-storied building and larger than the Great Sphinx of Egypt. The size of each head is 20sq mt,with a 20-meter- long face,a 7-meter -long nose,a 2.6-meter- wide mouth and two 1.5-meter -wide eyes. Though not facing the same direction,they are all lifelike and look ahead gravely in harmony with fixed gazes. On clear days,one can have a sight of the four presidents with their firm and steady expression at a distance of dozens of kilometers. Since the stone sculpture is unique in style,the Monument is now the U. S. National Art Centre of Popular Education. Groups of people keep streaming everyday to the site for a visit and tourists across the world are also interested in taking a view of this great Monument. Question: Why were those four presidents chosen ?Because the four presidents  _  . Yes or no, is the answer "all of the above"?
A: No


*Question*
Article: More and more birds are flying to settle at Qinghai Lake, one of the highest inland lakes in China, thanks to the protection efforts of local governments. Covering an area of over 4,000 square kilometers, Qinghai Lake is also the country's biggest salt-water lake. Located in Northwest China's Qinghai Province, the lake is famous for the two islands at its northwest point--Cormorant Island and Egg Island. The two islands have plenty of floating grass and various schools of fish, offering rich food sources for birds. The islands have become a paradise for different kinds of groups of birds and have been called 'Bird Islands'. Each March and April, when ice and snow covering the Qinghai-Tibet Plateau starts to melt, over 20 kinds of birds fly to the Bird Islands to lay eggs. During the months, flocks of birds cover the whole sky over the islands and birds eggs can be found everywhere. Visitors can hear the singing of birds from miles away. These have become a world famous symbol of the lake. To protect this paradise for birds and support calls for ecological protection, China set up the Qinghai Lake Natural Protection Zone at the end of 1997. Meanwhile, the State has pointed out the Bird Islands and Spring Bay of the Qinghai Lake as central protection zones. Inspection officials and management employees often patrol the lake, improving local residents' knowledge of related laws and spreading knowledge about animal protection to visitors. They are making great efforts to call on people to love and protect the birds. At the same time, they have built special fences around the island area, to prevent wolves, foxes and other carnivorous animals, as well as illegal hunters from breaking up the birds' nest-building, egg-laying and breeding. As a result, more and more birds are coming to the islands for sheltering and breeding. Question: Why are more and more birds coming to the biggest salt-water lake in the Great Northwest? Yes or no, is the answer "Because environments there are getting more and more agreeable for them to live in."?
**Answer**

Yes