It took _____ building supplies to construct these energy-saving houses. It took brains, too. [ ]

A. other than

B. more than

C. rather than

D. less than

以下哪项不是动脉导管未闭的常见症状

A．气促、咳嗽
B．乏力、多汗
C．心悸
D．声音嘶哑
E．缺氧发作