单选题16.By the year 2020, production in the area is to double______of 1990.
【正确答案】
A
【答案解析】that和one二者均可代替前文提到的人或物,在被替代成分后有介词短语修饰时,或被替代的成分为不可数名词时,用that,例如:The production of steel this year doublesthat of last year.今年的钢产量是去年的两倍。而在被替代成分前有形容词修饰时,则用one。例如:Here are two apples.Do you want the big one or the small one?这里有两个苹果,你是想要大的,还是想要小的?