问题
选择题
The rise in electricity costs has _______ our difficulties in carrying out the project.
A．added up
B．added up to
C．added
D．added to
答案
答案：D
考查短语辨析。句意“电价的上升已经增加了计划实施的困难。”added up“累计”；added up to“总共；意味着”；added to“增加”。故选D。