he met with the difficulty did he realize the importance of our help.A. Even thoughB. Only

问题补充：

he met with the difficulty did he realize the importance of our help.

A. Even though

B. Only before

C. Never until

D. Ever since

答案：

A. Even though

B. Only before

(答案→)C. Never until

D. Ever since

解析：短语辨析。 A．虽然；即使 B．只有在 C．相当于not...until直到……才D．从那时到现在。句意：直到他遇到困难他才意识的我们的帮助的重要性。选C。