一、替代词that(those)，one(ones)和it的区别
1．(2013·四川高考)The traffic on the main streets has a longer green signal than ________ on the small ones.
A．one B．this
C．that D．it
解析：选C 考查代词。句意：大街上的绿灯比小街上的绿灯亮得时间更长。that在此处替代前面提到的traffic，以避免重复。one泛指可数名词单数；this通常指代下文要提到的事情；it指代上文出现的同一事物。
2．(2013·天津高考)At our factory there are a few machines similar to ________ described in this maga zine.
A．them B．these
C．those D．ones
解析：选C 考查代词。句意：我们工厂里的一些机器与这本杂志里描述的那些机器很相似。空格处应用those表特指，替代前面出现的复数可数名词machines。注意题干中machines后有限制语described in this magazine，故不能用表泛指的ones，若选ones，则应在其前加上the。
3．(2012·辽宁高考)If you're buying today's paper from the stand, could you get ________ for me?
A．one B．such
C．this D．that
解析：选A 考查代词。句意：如果你去报摊上买今天的报纸，给我捎回一份好吗？one用来代替上文提到过的paper，相当于a copy of paper。
4．(2011·北京高考)The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase________.
A．them B．those
