新GRE小短文阅读练习题三十五
The percentage of children who wear glasses has increased signifi-cantly over the past thirty years.Sincethe methods used to diagnose
vision impairments are the same as they were thirty years ago , the
reason for this increase must be that a higher percentage of children
have poor eyesight today than thirty years ago.
In the argument given, the part that is underlined plays which of the
following roles?
ADescribing the circumstance that the argument seeks to explain
B Stating the position to be refuted by the argument
C Serving as an intermediate conclusion that supports a further
conclusion stated in the argument
DProviding an illustrative example that neither strengthens nor
weakens the argument
EProviding support for the conclusion of the argument by excluding
an alternative explanation of the phenomenon to be explained
答案：C
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