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It is hard to imagine life without Arabic numerals (数字). No other number system ever invented has a simple way to write a number

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问题    It is hard to imagine life without Arabic numerals (数字). No other number system ever invented has a simple way to write a number like 1984. In Roman numerals, it comes out like this: MCMLXXXIV. Imagine how difficult it would be for a school pupil to remember it!
   The Arabs, however, call their numbers "Indian numerals". This is probably because they got the original idea a long time ago from India. There were no printed newspapers or scientific magazines then, so mathematics traveled along the same routes that silk did, as businessmen sold and bought goods. The Arabs took the new numbers and made improvements that quickly led to advances in technology.
   The achievement of Arabic technology can be seen from a passage in a 10th-century book about an Arabic city:"The neighbouring country showed the results of careful work in agriculture, trade, and industry. Rice and many other plants were grown in fields with water supplied by Arab engineers. The city included 900 public baths, stone-covered streets, fountains, and beautiful buildings. " At this time, London was a small town with dirty streets, and Berlin was a farming village. In fact, cities outside the Arab world did not reach the same level of social development until centuries later.
From a 10th-century book, we can learn that______.
选项 A、Berlin was formerly a dirty city with sufficient rice and plants
B、London was under the rule of the Romans in the 10th century
C、the Arab world was more advanced than other countries around
D、London chiefly developed industry ten centuries ago
答案C
解析 根据第三段中对阿拉伯和其他国家或城市的描述可知，阿拉伯当时是 比较先进的，所以C项正确。其他三项文章均未提及。
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