问题
选择题
The book is _______ great value. It is well worth_______ twice.
A．of, reading
B．of, to be read
C．with, reading
D．with, to be read
答案
答案：A
题目分析：句意：这本书是有价值的。它值得读两遍。be of +名词，可以表示形容词。be worth doing 某事值得做。根据句意，故选A。