问题
选择题
--What kind of ________ makes 3G cellphones so popular with the young?
--Video communication, I think.
A．mark
B．sign
C．symbol
D．feature
答案
答案：D
考查词义辨析。mark标记，sign 符号，symbol 象征，feature特征，句意：哪种特征使3G手机在年轻人中如此的受欢迎。我认为是视频交流。所以选D。