问题补充：
Research universities have to keep up with the latest computer and scientific hardware price.
A. on account of
B. in addition to
C. regardless of
D. not to mention
答案：
A. on account of
B. in addition to
(答案→)C. regardless of
D. not to mention
解析：短语辨析、A. 由于；因为 B.除……之外 C. 不顾；不管 D.更不必说。句意：不管代价如何，研究型大学必须不落后于最新的计算机和科学硬件。故选C。
