问题描述：
Australia uses "distant learning" methods,____ the students ……
请问：
Australia uses "distant learning" methods,____ the students have lessons by two-way radio and mail.
A which B where C that D when
为什么答案选B 是个什么从句?怎么翻译?
请问：
Australia uses "distant learning" methods,____ the students have lessons by two-way radio and mail.
A which B where C that D when
为什么答案选B 是个什么从句?怎么翻译?
问题解答：
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