问题
选择题
Tom showed me his new cell phone, _______ was small but it could change colors in different weather.
A．the screen of whom
B．whom the screen of
C．which the screen of
D．the screen of which
答案
答案：D
考查定语从句。句中先行词为new cell phone，指物，the screen of new cell phone新手机的屏幕，故选D。