Today’s world is changing rapidly, making necessary for us to continue learning otherwise we can’t keep up with the time.
A. us
B. it
C. this
D. one
网友回答
A. us
(答案→)B. it
C. this
D. one
解析:考查代词的用法。句意“当今的世界变化飞快,使得持续学习变得很有必要,否则我们就会跟不上时代的发展。”make it+形容词for sb. to do sth.,it是形式宾语,不定式是真正的宾语。故选B。