新GRE小短文阅读练习题四十三

会计考友

Those strawberry growers in Miller County who last year treated their
% G: F7 g  x- t/ I6 P* pstrawberry fields with a certain fungicide report that this year strawberry
: d" c% O6 A- H7 s3 R+ |plants will not grow in the treated fields.  Yet, since crop failures have
" _# i1 Q# M* A1 q6 J: }also occurred this year in adjacent, untreated fields, it is obvious that the
. A  }0 z% g" F2 J2 W; Nfungicide is not responsible for this disaster.
Which of the following, if true, most seriously weakens the argument?
       Within weeks after spraying, the fungicide breaks down into a number
        of simple compounds that have no antifungal effect.  
0 P6 N+ \2 D, D+ Y1 m; m* ?5 b6 z      The fungicide is normally sprayed on fields only toward the end of the
        growing season after the strawberries have begun to ripen.  
      Farmers in Miller County who last year used a fungicide chemically
       similar to that used on the affected strawberry fields have reported
; x3 a9 d3 R8 q) z3 C+ H       no significant crop losses this year.  
      The crop failures in the adjacent, untreated fields were as serious as
# q" K  e% C2 Q# e, I2 q5 a& {       those that occurred in the treated fields.  
      After being sprayed on crops, the fungicide travels easily through
       irrigation systems from field to field.  
3 S$ {9 z' {2 T- F0 E/ _答案E