问题
选择题
I didn’t go outing on National Day because the bad weather ______ the difficulty.
A.added up
B.added
C.added up to
D.added to
答案
答案:D
考查add的用法。句意“我国庆节没有去远足,因为糟糕的天气徒增了难度。”add up“加起来,有意义”;add up to“合计达,意味着”;add to“增加”。故选D。