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  3. Ten thousand years ago, man entered the New Stone Age and the earth became warmer. This allowed man to leave the mountain areas

Ten thousand years ago, man entered the New Stone Age and the earth became warmer. This allowed man to leave the mountain areas

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问题     Ten thousand years ago, man entered the New Stone Age and the earth became warmer. This allowed man to leave the mountain areas for the plains. To adapt to the new environment, humans chose to settle areas near water. They began to build their own houses and invented pottery. Also in this period, primitive agriculture appeared, making it possible for people to live in permanent settlements. The spreading of such techniques as grinding and hole-drilling enabled humans to make more regular and fixed stone tools so as to meet different needs. Research by Chinese archaeologists has found that remains of the New Stone Age mostly lie along the coastal areas of Eastern China. As far as food structure is concerned, the people in the south grew rice while the northern people grew corn. The fact that the Chinese people began to grow paddy 9 000 years ago indicates that rice was first grown in China, not in India. Our ancestors 8 000 years ago were able to make objects from jade, use the skills of spinning and weaving, blow melodies in seven musical scales, and carve signs in stone and wood. The canoe and oar, unearthed from 7 000-year old remains, show that there were water transportation tools at that time. Also during this time, people began to domesticate cattle. The Yangshao people (named after Yangshao, Henan Province, where remains were first found in 1921), who lived 6 000 years ago, created a splendid painted pottery culture and began to build small fortresses using rammed earth skills. Five thousand years ago, people began to raise silkworms and knit goods with mulberry silk. Also they learned smelting copper to make small tools like bronze knives. Four thousand years ago people began to use written characters. In the Yangtze and the Yellow River valleys, a group of old cities appeared. Legends recorded in ancient documents, like those of the Shennong Family growing crops, the wife of the Yellow Emperor inventing silk, ministers of the Yellow Emperor inventing characters, the boat and the cart, and the Yellow Emperor fighting against the southern tribes, show that they are not just myths because they contain some traces of history. These discoveries reveal the long history of China. (368 words)
When were the Chinese able to carve things out of wood?
选项 A、9 000 ago.
B、8 000 ago.
C、7 000 ago.
D、6 000 ago.
答案B
解析 参考句在文章的中部，含有“8 000年”的那个句子。
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