(单选题)
—Which book is ______, this one or that one?
—I think this one.
A.useful
B.more useful
C.the most useful
D.most useful
参考答案:B
参考解析:
考查形容词比较级。句意:“哪本书更有用,这本还是那本?”“我想是这本。”根据后文this one or that one可知,此处应填入比较级,useful的比较级是more useful。故选B。
知识点:
