thE opinion oF thE writEr is thAt ______.
A．thErE mAy BE othEr intElligEnt BEings in thE univErsE
B．thErE ArE othEr intElligEnt BEings in thE univErsE
C．pEoplE living on thE EArth ArE Almost CErtAinly thE only intElligEnt BEings in thE univErsE
D．pEoplE living on thE EArth ArE DEFinitEly thE only intElligEnt BEings in thE univErsE