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1．_______ tigers in that forest are in danger．Now only ________ the tigers are protected．（　�。�
A．Hundreds； three-fourthsB．Hundreds of； three-fourths of
C．Hundreds of； three quartersD．Hundred of； three-quarters of

分析 那個(gè)森林里的數(shù)百只老虎瀕臨滅絕．現(xiàn)在只有四分之三的老虎受到了保護(hù)．

解答 答案：B．
第一個(gè)設(shè)空處根據(jù)句意"那個(gè)森林里的數(shù)百只老虎瀕臨滅絕．"hundred 前面沒(méi)有具體數(shù)詞，需要與of連用，表示不具體、不準(zhǔn)確的數(shù)目時(shí)，詞尾須加-s． 第二個(gè)設(shè)空處的句意是：現(xiàn)在只有四分之三的老虎受到了保護(hù)．句中要使用分?jǐn)?shù)四分之三，分?jǐn)?shù)表達(dá)法是：分子用基數(shù)詞，分母用序數(shù)詞，如果分子大于1，分母要加-s，所以四分之三的正確表達(dá)為：three fourths 另外也可使用three quarters 表示四分之三．最后注意分?jǐn)?shù)修飾名詞時(shí)需在名詞前面加of，故選B．

點(diǎn)評(píng) 本題考查數(shù)詞的用法，在平時(shí)的學(xué)習(xí)中注意積累與運(yùn)用，達(dá)到熟練掌握的目的．

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