题干

根据图表内容,在下面画线处补写恰当的句子。要求内容贴切,语意连贯,逻辑严密,语句通顺。我国SO2的排放源及贡献率

排放源

排放量(万吨)

贡献率(%)

煤炭燃烧

2179

88.6

炼钢

168.5

6.9

炼油

68

2.8

机动车

41.6

1.7

合计

2457.1

100.0

新年伊始,我国中东部地区陆续出现大范围和长时间雾霾天气,PM2.5一度达700微克/立方米以上。经初步分析,近期雾霾产生的原因之一是主要污染物SO2排放量大。从图表中我们发现,①____。煤炭燃烧排放的SO2与空气中其他污染物进行复杂的大气化学反应,形成硫酸盐、硝酸盐二次颗粒,由气体污染物转化成固体污染物,成为PM2.5升高的最主要因素。由此可见,②____

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    Every week in China, millions of people will sit in front of their TVs watching teenagers compete for the title Character Hero, which is a Chinese­style spelling bee (拼写大赛). In this challenge, young competitors must write Chinese characters by hand. To prepare for the competition, the competitors usually spend months studying dictionaries.

    Perhaps the show's popularity should not be a surprise. Along with gunpowder and paper, many Chinese people consider the creation of Chinese calligraphy (书法) to be one of their primary contributions. Unfortunately, all over the country, Chinese people are forgetting how to write their own language without computerized help. Software on smart phones and computers allows users to type in the basic sound of the word using the Latin alphabet(字母). The correct character is chosen from a list. The result? It's possible to recognize characters without remembering how to write them.

    But there's still hope for the paint brush. China's Education Ministry wants children to spend more time learning how to write.

    In one Beijing primary school we visited, students practice calligraphy every day inside a specially decorated classroom with traditional Chinese paintings hanging on the walls. Soft music plays as a group of six­year­olds dip brush pens into black ink. They look up at the blackboard often to study their teacher's examples before carefully trying to reproduce those characters on thin rice paper."If adults can survive without using handwriting, why bother to teach it now?"we ask the calligraphy teacher, Shen Bin."The ability to write characters is part of Chinese tradition and culture,"she reasons."Students must learn now so they don't forget when they grow up."says the teacher.