3.      I came here in____ autumn of 2008.
A. one    B. a     C. an     D. the

4.      The children all had a good time on____ Children's Day.
A. the ,    B. their   C. a         D. /

考点2.     knowledge和experience

knowledge一般是不可数名词，但如果有修饰语时，常用作可数名词单数形式，前面用不定冠词。如：
English is a bridge to so much knowledge.
He has a limited knowledge of French.
experience做“经验”讲时，是不可数名词，做“经历”讲时，是可数名词。

5.      【1996全国】Many people agree that ___knowledge of English is a must in _____international trade.
A. a; 不填;  B. the; an  C. the; the D. 不填; the

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