xy13-1的22题

City
Official:  At City
                Hospital,
uninsured patients tend to have shorter stays and fewer procedures performed
than do insured patients, even though insured patients, on average, have
slightly less serious medical problems at the time of admission to the hospital
than uninsured patients have.  Critics of
the hospital have     concluded that the uninsured patients are mot receiving
proper medical care.  However, this conclusion is almost certainly false.  Careful investigation has recently shown two
things:  insured patients have much
longer stays in the hospital than necessary, and they tend to have more
procedures performed than are medically necessary.

In the city
official’s argument, the two boldface
portions play which of the following roles?

1. The first states the conclusion of
        the city official’s argument; the second provides support for that
        conclusion.
2. The first is used to support the
        conclusion of the city official’s argument; the second states that
        conclusion.
3. The first was used to support the
        conclusion drawn by hospital critics; the second states the position that
        the city official’s argument opposes.
4. The first was used to support the
        conclusion drawn by hospital critics; the second provides support for the
        conclusion of the city official’s argument.
5. The first states the position that
        the city official’s argument opposes; the second states the conclusion of
        the city official’s argument.

再下句However, this conclusion is almost certainly false.
                很明显才是官员的观点

LZ不是已经说了正确答案了吗?