（） A．asB．becauseC．soD．but

A．andB．orC．soD．but

【C4】A．asB．thanC．soD．thus

【C13】A．asB．becauseC．thoughD．that

It is not ______ much his appearance I like as his personality.A．asB．veryC．soD．that

【C10】A．asB．soC．orD．but

Its such a difficult problem______no one can work it out.A．asB．thatC．soD．this