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2025-01-10 10:48本頁面
【正文】 by puter use, watching TV or reading in weak light. The Australian government researchers believe that sunlight is good for people’s eyes. They pared the vision(視力 ) and habits of 100 sevenyearold children in Singapore and Australia. In all, 30% of the Singaporean children were shortsightedthis rate(比率 ) was ten times higher than Australian children. Both groups spent a similar amount of time reading, watching television and playing puter games. However, the Australian children spent an average(平均 ) of two hours a day outdoors—90 minutes more than the Singaporean children. Professor(教授 ) Ian Man, from the Australian Research Council’s Vision Centre, said, “Humans are naturally longsighted, but when people begin to go to school and spend little or no time outdoors, the number of shortsighted people gets larger. We’re also seeing more and more shortsighted children in cities all around the world—and the main reason may be that city children spend less time outdoors. “ Daylight can be hundreds of times brighter than indoor light. But why does playing outside prevent us from being shortsighted? Scientists believe that natural light has a special chemical(化學(xué)物質(zhì) ) which stops the eyeball from growing out of shape and prevents people being shortsighted. So be outdoors. It doesn’t matter if that time is spent having a piic or playing sports. （ ） 14. How much time did the Singaporean children spend outdoors on average every day in the research? A. 2 hours. B. 90 minutes. C. 1 hour. D. 30 minutes. （ ） 15. What is the fifth paragraph mainly about? A. Why people bee shortsighted. B. Why natural light has a special chemical. C. Why playing outside is good for one’s eyesight. D. Why daylight is much brighter than indoor light. （ ） 16. Which of the following is true according to the passage? A. People will all bee shortsighted after they begin to go to school. B. Playing outdoors for 2 or 3 hours every day can help protect your eyesight. C. Children in Australia are more likely to get shortsighted than those in Singapore. D. If you spend two or three hours playing outside each day, you won’t get short sighted. 7 答案及解析 1. C. 從第一段第二句話可知，看一個人的智力水平是看他在新環(huán)境中的生活和行為方式。 2. D. 從第二段第一句話可知，聰明的人總是考慮他所處的新環(huán)境，而不是其他的。 3. B. 從第二段可知，當(dāng)聰明的人失敗時，他會從自己的失誤中學(xué)習(xí)。 4. A. 從文章最后一段第二句話可知，聰明的孩子和不聰明的孩子是兩種截然不同的類型。 5. C. 文章全文講的是 Mary 幫 Tom 掙錢的事，所以她樂于幫助別人。 6. A. 商店售價是 元，他想賣 元，肯定是賣得便宜。 7. B. 從文章最后兩段可知， 20 條項鏈可賺 85 元，旅游后還剩 10 元，說明旅游需要 75 元。 8. A. 他知道 20 條項鏈可以賺 85 元，旅游需要 75 元，所以他說可以剩 10 元。 9. D. 全文講述的是 Mary 如何幫助 Tom 為旅游準(zhǔn)備錢的故事。 . 由日期顯示可知，作者 4 月 24 日在揚州。而 4 月 27 日又到了西湖，可知在揚州呆了4 天。 . 由第一段可知，作者品嘗了當(dāng)?shù)孛朗常斡[了許多名勝，而且還做了有名的足底按摩，唯獨沒有提到爬山。 . 文中多次提到了主語 we,可 見不只是作者一個人。 . 三段文字都在講作者在中國旅游的一些見聞，可知 B 項更適合做文章標(biāo)題。 14. D 從第三段的最后一句話可知：澳大利亞的兒童平均每天花兩個小時在戶外，而這比新加坡的兒童多 90 分鐘，因此新加坡兒童平均每日呆在戶外的時間為 30 分鐘。 15. C 這一段的主旨句是第二句話，因此答案是選項 C。 16. B 本段第三段講到澳大利亞的兒童平均每日在戶外的時間為兩小時，而他們與平均每天在戶外呆 30 分鐘的新加坡兒童比，近視的可能性要低十倍。由此可見，每日在戶外呆 2 到3 小時是有利于保護視力的。
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