A-A+
A cure for cancer is bound one of these days.A
问题详情
A cure for cancer is bound one of these days.
A.to discover
B.to discovering
C.to being discovered
D.to be discovered
参考答案
正确答案:D
解析:句意:近日癌症的治愈方法是必然会发现的。考查动词不定式的被动式。根据上下文to be discovered的修饰对象是a cure for cancer,两者为修饰与被修饰关系:同时含有被动关系。be bound"必然要做的”。