yup--I think you are right, Ed

> ----------
> From:         EDWARD VAVRA[SMTP:[log in to unmask]]
> Reply To:     Assembly for the Teaching of English Grammar
> Sent:         Wednesday, September 22, 1999 10:51 AM
> To:   [log in to unmask]
> 
> I am tempted to  agree with Edith, but I think the answer should be (D),
> "what":
> 
> Electricity is to agriculture what blood is to the body.
> 
> "Like" or "as" would establish a simple comparison:
>    "A" is to "B" as (like) "X" is to "Y."
> 
> The use of "what," however, establishes a further identity between "A" and
> "X" ― in this case, they are equal in the sense of being sources of
> energy.
> 
> 
> 
> 
> >>> "Wollin, Edith" <[log in to unmask]> 09/22 1:32 PM >>>
> They gave you a wrong answer--the answer is A.  Like or As are possible in
> the blank; the others are not.  A comparison is being made
> 
> > ----------
> > From:         xql[SMTP:[log in to unmask]] 
> > Reply To:     Assembly for the Teaching of English Grammar
> > Sent:         Wednesday, September 22, 1999 6:22 AM
> > To:   [log in to unmask] 
> >
> > Hello,everyone.
> > I'm a chinese student.I came across a question as follows:
> >
> > Electricity is to the agriculture _____ blood is to the body.
> > A)like
> > B)that
> > C)which
> > D)what
> >
> >
> > The answer is C),and I don't know why.Is B) right?
> > Thanks .
> >
>