问题
选择题
______in the heart of Toronto is the Canadian National Tower, ______ is often called the CN Tower for short.
A．Located, where
B．locating, which
C．locating, where
D．located, which
答案
答案：D
考查非谓语动词及定语从句。be located in坐落于，在句中作状语；which引导非限定性定语从句，指代前面一句话，选D。