问题
选择题
When we start gazing into the night sky with a telescope, soon we’ll be astonished by the realization _______ we and our world are part of this giant system.
A．which
B．whether
C．that
D．as
答案
答案：C
考查同位语从句。we and our world are part of this giant system.是realization的同位语，that在从句中不做成分。