问题补充:
It will cost a lot of time. I think we shall need it and it will certainly be useful to us more or less.
A. What’s more
B. As a result
C. On the other hand
D. After all
答案:
A. What’s more
B. As a result
(答案→)C. On the other hand
D. After all
解析:A而且(表示递进关系);B结果是;C另外一方面;D终究,毕竟;句义:这的确要花很多的时间,但另外一方面,我认为我需要它,它或多或少地对我们有帮助。根据句义说明on the other hand表示上下文之间的轻微的转折,符合上下文的含义。故C正确。