【单选题】
阅读下面短文，从短文后所给的[A]、[B]、[C]三个选项中选出能填入相应空白处的最佳选项。
Paper is one of {{U}} (44) {{/U}} important inventions(发明) of all time. The people inEgypt (埃及) first used a kind of grass like plant to {{U}} (45) {{/U}} paper around five {{U}} (46) {{/U}} years ago. 3000 years later, aChinese man created a new {{U}} (47) {{/U}} of paper using pieces of old cloth. Then for several hundred years, people {{U}} (48) {{/U}} the world had been using thisChinese method to make paper. In 1838, aCanadian man invented a {{U}} (49) {{/U}} method of papermaking using wooD、Today, most of the paper we use is made from {{U}} (50) {{/U}}.
B．
C、
网考网参考答案：B
网考网解析：
[解析] 考查固定短语。表示“几千年”，thousand不能变复数。但表示“成千上万的”，是thousands of，thousand要变成复数。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>
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