11、It is widely approved that any civilization could not originate or survive without .A、animal bonesB、riversC、ropesD、metal
举一反三
- _______ one can survive _______ water. A: No… with B: No… without C: Any… with D: Any… without
- Are there any who could reproduce the photo without damaging it?
- He ________ that he could finish the job without any help.
- The plan was approved without _____________.
- The researchers found that______. A: the gene therapy could be verified by animal experiments B: the antitat gene may be artificially produced C: antitat protein functions without causing any side-effects D: antitat gene enhances the human immune system