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6．There are students on the playground．（　�。�

A．

hundred

B．

hundreds of

C．

hundred of

D．

two hundreds

分析操場上有數百名學生．

解答答案：B
hundred的用法：基數詞+hundred+名詞復數形式表示"幾百…"表確數；hundreds of+名詞復數表示"數百的…成百上千的…"，表約數，根據該詞的用法，對照選項可知hundred以復數形式出現后面跟of短語，故填"hundreds of"，表示約數，故選B

點評記住基數詞+hundred表示"幾百…"表確數和hundreds of表示"數百的…成百上千的…"，表約數，是做題的關鍵．與之用法相同的還有thousand、million、billion．掌握這幾個詞的用法規律：在thousand、hundred、billion，million前有具體數字時，它們不加s，也不帶of，表確數，這些詞的復數形式后面常跟of短語，表示約數

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