13．        soldiers and doctors went to Ya'an to help the people there two months ago．（　　）
A．Thousands ofB．Two thousandsC．Thousand of

分析 兩個月前，數(shù)以千計大的士兵和醫(yī)生去雅安幫助那里的人們．

解答 答案：A．英語中thousand"千"的用法是：如果前面有具體的數(shù)字，就不能用復(fù)數(shù)，也不能加of；如果沒有具體數(shù)字，就要用復(fù)數(shù)，并跟of．根據(jù)選項可知，應(yīng)該用thousands of．故選A．

點評 本題就是要考查對thousand一類詞的掌握情況，這樣的詞還有hundred、million、billion等．

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