问题
选择题
—This camera is very similar ________ that one.
—Yes. I have some trouble ________ their differences.
A．as; telling
B．to; telling
C．to; to tell
D．with; to tell
答案
答案：B
此题重点考查两个短语结构。Be similar to…与…相似和have trouble in doing sth表示做某事有困难。