【C18】A．originB．rootC．sourceD．resource

【C2】A．originB．dawningC．foundationD．derivation

Despite scholars’ study, the （) of human beings is still unclear.A、originB、causeC、begin

All words contain a______.A．bound morphemeB．rootC．suffixD．prefix

【C19】A．originB．shameC．beliefD．duty

59._________A. timeB. rootC. rateD. beginning

系统管理常用的二进制文件 一般放置在( )目录下。A ／sbinB ／rootC ／usr／sbinD ／boot