单选题 1.  Clothing made of plastic fibres has certain advantages over ______ made of natural fibres like cotton, wool or silk.
【正确答案】 C
【答案解析】 clothing是衣服、被褥的总称,为不可数名词,不能用one或the one来指代。what相当于“先行词+that”,后边要接从句。所以只能用that指代clothing。
   ★关于one(s),the one(s),that和those代词用法归纳如下:
   one替代“a+单数可数名词”,表示泛指;
   特指的the one相当于that;
   the one的复数形式the ones,在口语中也常用those代替;
   当后面有of短语时,一般用that或those;
   当有前置修饰语时,只能用one(s),如the red one;one(s),the one(s);those,that都是替代“同类”事物,其中只有that可替代不可数名词。