Read the following article and select the best answer. Article: Most American children eat potatoes every day, but they don't know which part of potato is most nourishing .Take a sharp knife and cut a very thin slice from it and hold it to the light, and you will see that the potato has skin, an outside rim and the inner part. The outside rim which is right under the skin is most nutritious.But this part is often thrown away with the skin. Even the skin itself is better for food than the inside. When eating a cooked potato, if you choose the inside and leave the outside, you are wasting the best part of it. If you can't eat the whole potato, it is better to eat the outside rim and leave the inner part. Question: What does this reading tell about potatoes? It tells us _ . - how to cook them - how to cut potatoes - what is a potato made up of - how to eat them
how to eat them

Read the following article and select the best answer. Article: winter-swimming has become popular in Beijing. three years ago, few people would go swimming in the city waters. but now there is a winter-swimming enthusiasts'club and it has more than 2,000 members. the oldest is 84 years of age and the youngest is only 7. _ They may be workers, peasants, soldiers, teachers, students....Though it is now the coldest part of the season and the water temperature in the city's lakes is around 0degc, many winter-simmers still swim in the icy waters, even when it is snowing. They enjoy themselves in the lake, while the people by the side of the lake are wearing heavy clothes. why are so many people interested in winter-swimming? Because winter-swimming can be good for one's health. Bei Sha is a good example. He is 69 years old, and he once suffered from heart trouble for 26 years. After ten years of winter-swimming he is now in good health. Scientists are now studying the effects of winter-swimming on health. Question: Winter-swimming has become popular in Beijing because _ . - more and more people like to swim in winter - it is more interesting than swimming in summer - winter-swimmers are brave men - winter-swimming does a lot of good to one's health
winter-swimming does a lot of good to one's health

Q: Read the following article and select the best answer. Article: Several weeks ago, kidsPost did a story on "The Art of Video Games" at the Smithsonian American Art Museum. The exhibition has created debate with some people saying that as fun as video games are ,they are not works of art. Other people say that videos games may be a new form of art and that they belong to in museums. We asked readers for their opinions on the topic. Here are a few of the letters we received. A video game is like a painting on a screen. In order to make a video game, you have to think of something original to reach the players. This is the point of Art. ---Mary Pottanat,13 I believe video games are not a form of art. Art should be a visual and creative expression of feelings. Although it is arguable that video games are visual ,they do not express feelings in any way. ---Prannab Kirshnan,12 However exciting video games are, they are not art. Painting is art, but not video games. Art has beauty and culture that no technology could ever compare to. Even though you can create art in some video games, the " Mona Lisa" wasn't painted with Nintendo. ---Caroline Kaplan,10 Art is a way of communicating ideas to the public in a way that is fun to them. The "public", who in this case are kids and adults, are finding these video games from different time periods interesting. Video games would not have been art if it had not been for the kids and adults attracted by "the art of video games". ---Ryan Puthumana,10 Question: The text mainly discusses _ . - the differences between video games and art. - why people like or hate video games. - whether video games are art or not. - what can be considered works of art.
A: whether video games are art or not.

Question: Read the following article and select the best answer. Article: Nuclear radiation has a certain mystery, partly because it cannot be detected by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around but we can't detect them or sense them without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. At very high levels, radiation can kill an animal or human being outright by killing masses of cells in important organs. Even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and when they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years. This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated and feel fine, then die of cancer five, ten, or twenty years later as a result. A child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents. Question: Radiation can lead to serious trouble even at the lowest level _ . - when it kills a few cells - if it damages a few cells - though the damaged cells can repair themselves - unless the damaged cells can reproduce themselves
Answer: if it damages a few cells

*Question*
Read the following article and select the best answer. Article: Elizabeth's Second! In 60 years, the Queen has never put a foot wrong in public. And for the last 24 of them, it turns out she's had a secret weapon -- the nice Ella Slack. The former BBC manager has, unknown to anyone except a handful of key advisers, spent the last quarter of a century acting as the Queen's official stand-in at rehearsals for royal events. The 69-year-old has never accepted a penny for her royal service, considering it "a pleasure and an honour" to ensure that everything runs smoothly for the Queen. "How many people in the world have had a chance to sit in a royal landau or walk onto the dais at Windsor Castle even before the Queen has done so?" she said. While Miss Slack may not resemble the Queen facially, she has a similar figure to the Queen, standing just 5 foot. The Queen is 5 foot 2 inch. She began her remarkable role in 1988, when she was working as manager of the BBC's sports and events department. A producer asked her if she could stand in for the Queen to check camera angles at a rehearsal -- and her second career was born. Since then, from the State Opening of Parliament to the 50th anniversary of Victory day, wherever the Queen is on duty Miss Slack is likely to have been there first. She has perfected her own version of the Queen's clothes, including a black patent handbag she bought in a charity shop for PS1, and even styles her hair like the Queen. Question: What's the Queen's secret weapon? - She often meets people in public. - She actively attends social activities. - She has a nice lady to act as herself. - She and Miss Slack have a lot in common.
**Answer**
She has a nice lady to act as herself.