【题目】While e-book sales this year have declined, it is still important for us to remember that the figures are still higher than ______ five years ago.
A. one B. that
C. those D. they
在线课程【答案】C
【解析】句意：尽管今年电子书的销量已经下降，但是对于我们来说记住数字仍然高于五年前的销售量仍然很重要。这里用代词those指代上文出现过的可数名词复数figures，故选C。