【文章內(nèi)容簡介】 bee nearsighted during the study, the degree to which their eyesight worsened was slightly smaller among those who spent more time outdoors. The researchers selected six schools and required the children, whose average age was 7 at the start of the study, to attend one additional 60minute class of outdoor activities during each school day for three years. The parents of these children were also encouraged to engage their children in outdoor activities after school, especially during weekends and holidays. The other half of the children, from another six schools, continued their usual activity patterns. After three years, percent of the kids in the intervention group (干預(yù)組 ) had bee nearsighted, pared with percent of the kids in the other group. It is not clear exactly why spending more time outside would benefit children?s eyesight, the researchers said. However, some research has suggested that the higher levels of light intensity found outdoors may increase the release of the chemical dopamine (多巴胺 ) of the eye. In turn, dopamine is known to restrain the type of growth in the eye that is associated with nearsightedness. Based on the new results, the researchers remend that children spend more time outdoors because of the potential benefits of their eyesight. However, it?s important to protect kids? skin and eyes from UV(紫外的 ) light, which can be damaging. 29. What did the children in the intervention group do during each school day? A. Attend an extra class of outdoor activities. B. Continue to do their usual activities. C. Spend one hour in doing eye exercises. D. Participate in outdoor activities with parents. 30. What can be inferred about the chemical dopamine? A. It can contribute to poor sight. B. It can damage people?s brain. C. It is beneficial to eyesight. D. It means low levels of light intensity. 31. What may be discussed in the following paragraph? A. How to design outdoor activities for kids. B. How to prevent kids being nearsighted. C. How to protect kids? skin and eyes from UV light. D. How to encourage kids to join in outdoor activities. 32. What can be a suitable title for the text? A. The More Time Outdoors, the Better B. Kids May See Better if They Play Outside C. It?s Time to Engage Kids in Outdoor Activities D. Researchers Found a Cure for Nearsightedness D “People are ruder today because they are rushed and more ?time poor? than ever before,” says Patsy Rowe, “ Manners have fallen off the radar(雷達(dá) ).” Due to our strong attraction to electronic equipment it is a wonder more people don?t wake up each morning and greet the singing birds with a plaint about the noise. Here are some examples of rudeness. Some people prefer to do almost everything over the inter. To them, dealing with an actual human is like an evolutionary step backward. It feels very slow because humans don?t work at 4G speeds. When you have dinner with friends, you will often notice someone paying more attention to his mobile phone. We have programmed ourselves to think that every new message brings lifechanging news, so taking calls and checking our texts are more important than talking to the people we are with. What is worse, some people even tend to send anonymous（匿名的） rude messages by . However, rudeness is never acceptable. Don?t assume it is OK to be rude if the person you?re in touch with won?t recognize you. If you have something awful to say, have the courage to face the person and say it, write a letter or and sign it, or fet it. Upsetting people with unsigned messages is cruel and annoying. We shouldn?t blame technology for our shortings. Technology is here to help us, but we should not allow it to take over our lives. An important step is admitting our shortings. People spend a lot of time pointing out bad manners but it would be even more helpful if we?d publicly recognize good manners when we see them. 33. Some people are less willing to deal with humans because________. A. they are being less patient B. they are growing too independent C. they have to handle many important messages D. they have to follow an evolutionary step backward. 34. The author thinks sending unsigned awful messages is ________. A. ridiculous B. hateful C. acceptable D. reasonable 35. What can we learn from the last paragraph? A. We should praise good behavior. B. Technology can never be blamed. C. We should keep p