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We are bound to solve the present severe problem, ________ we act intelligently and promptly.
A．even thoughB．unlessC．a(chǎn)s long asD．in case
C
考查條件狀語從句。as long as =" on" condition that意為“只要”。句意為：只要我們馬上明智地采取行動(dòng)，我們一定能夠解決當(dāng)前的這個(gè)緊迫的問題。
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