【C5】A．guessB．perceiveC．protectD．touch

【C5】A．／B．offC．in touch withD．away from

It took me two hours to figure out how to do it.A．guessB．sum upC．understandD．summarize

【C9】A．maintainB．sustainC．protectD．preserve

The suns rays can______water up to 10 feet.A．pierceB．perceiveC．punctureD．penetrate

【C12】A．guessB．speculateC．imagineD．reflect

Your argument ____ that human nature is essentially the same everywhere.A、guessB、prete