prep 1-24

24.   (25819-!-item-!-188;#058&002130)

Employment costs rose 2.8 percent in the 12 months that ended in September, slightly less than they did in the year that ended in the previous quarter.

(A) less than they did

(B) less than it did

(C) less than they were

(D) lower than

(E) lower than they were

这道题目选A没什么问题，因为要用less than而不能用lower than。可是，我的问题是A里面用了they，这里感觉应该用those更好啊。不是有过好几道题目都是因为比较对象用了they错了吗？

请NN指教，谢谢拉

这里不用those,而应该用they.

they 指代的就是Employment costs，即同样的事物的比较，但是处于不同的时间。

those一般和介词或限定性定语从句一起使用，指代不同事物的相同比较方面。