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Text 3 It is widely accepted that English is the global language of modern times. About three decades ago, French was recognized as the language of diplomacy (外交), and German was considered the language of science and technology. English now dominates(主导) not only as the language of science but also diplomacy, computing, and tourism. Today, in terms of native speakers, Mandarin Chinese is the world′s largest language. Yet there are people who believe that China will become the most powerful country in the world. Some have even fixed the date as early as the year 2020. At present, while English is more widely spoken than any other language,there are more people who speak Chinese than English due to the large population in China alone. If China does become a world power, there is no doubt that this language will spread worldwide. As the controversy over which language will become dominant in the world continues, there are many who feel that the dominance of English is unique and irreversible (不可逆的 ). However, a separate study from David Graddol′s suggests that English′s dominance in the scientific area will continue. There is also an argument that the English language would be changed greatly by 2020 for various reasons. With the possibility of China rising as a world power,Mandarin could definitely challenge the dominance of English as a global language. Which language is now considered as the language of diplomacy? A.French B.Chinese C.German. D.English Which language has the largest population of native speakers?A.Chinese C.English E.German. F.French The author says that Chinese is expected to spread worldwide if_____.A.China becomes a real world power B.China has a larger population C.China has the modern technology D.more tourists come to China What does controversy in the last paragraph probably mean?A.Plan. B.Argument. C.Conditoin. D.Goal.
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【单选题】材料的应用和发展与人类文明的进步紧密相关,下列关于材料的说法正确的是(  )
A.
合金和合成纤维都是有机合成材料
B.
羊毛和棉花属于天然纤维
C.
破裂的电木可以热修补
D.
大量使用合成材料不会污染环境
【单选题】下列说法不正确的是
A.
硬铝、碳素钢都是合金材料;合成纤维、光导纤维都是有机高分子化合物
B.
油脂在碱的作用下可发生水解,工业上利用该反应生产肥皂
C.
处理废水时可加入明矾作为混凝剂,以吸附水中的杂质
D.
玻璃、陶瓷、水泥属于无机硅酸盐材料,其生产原料都需要石灰石
【简答题】为什么将“只有改革开放,才能发展中国”写入党章?
【多选题】为什么只有改革开放才能发展中国?
A.
改革开放是中国的第二次革命
B.
改革开放是解放和发展社会生产力的必然要求
C.
改革开放是适应科技革命和时代发展的必然要求
D.
改革开放是社会主义制度的自我完善和发展
E.
改革开放是实现中华民族伟大复兴的必由之路
【多选题】只有社会主义才能救中国,只有改革开放才能( )。
A.
发展中国
B.
发展社会主义
C.
构建人类命运共同体
D.
发展马克思主义
【单选题】下列说法正确的是
A.
天然纤维和化学纤维(简称化纤,包括人造纤维和合成纤维)的主要成分都是纤维素
B.
0.2mol/L盐酸与0.05mol/LBa(OH) 2 溶液等体积混合后,溶液PH为1
C.
C 60 属于原子晶体,用于制造纳米材料
D.
氨基酸在固态时主要以内盐的形式存在,属于离子晶体,熔点较高,不易挥发,易溶于水,难溶于有机溶剂
【单选题】在煤尘防护中,以下不属于有机粉尘的是()。
A.
树脂
B.
合成纤维
C.
金刚砂
D.
烟草
【多选题】党的十九大指出:“只有社会主义才能救中国,只有改革开放才能( )”。
A.
发展中国
B.
发展社会主义
C.
发展马克思主义
D.
上述说法均不正确
【判断题】只有改革开放才能解放中国、发展共产主义。()
A.
正确
B.
错误
【单选题】材料的应用和发展与人类文明进步紧密相关。下列关于材料的说法正确的是
A.
合金和合成纤维都是有机合成材料
B.
破裂的用电插座可以热融修补
C.
大量使用合成材料不会污染环境
D.
羊毛和棉花属于天然纤维
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