___he met with the difficulty did he realize the importance of our help.
A．Even thoughB．Only beforeC．Never untilD．Ever since
C
短語(yǔ)辨析。  A．雖然；即使   B．只有在 C．相當(dāng)于not...until直到……才D．從那時(shí)到現(xiàn)在。句意：直到他遇到困難他才意識(shí)的我們的幫助的重要性。選C。
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