. At the Shadybrook dog kennel, all the adult animals were given a new medi-: _* t5 b4 B: k0 g$ g1 o- K
cation designed to reduce a dog's risk of contracting a certain common
7 G/ \- G$ a$ y$ d) yinfection. Several days after the medication was administered, most of the
6 B- t! Q0 v/ N4 mpuppies of these dogs had elevated temperatures. Since raised body temp-/ K$ H4 R1 J* m0 H
erature is a side effect of this medication, the kennel owner hypothesized
& J' D3 ^: E$ u+ rthat the puppies' elevated temperatures resulted from the medication's being 3 N7 z3 h6 { E& \, { H# H7 a
passed to them through their mothers' milk. 3 l' C0 O7 E" R
Which of the following, if true, provides the most support for the kennel owner's
7 L, \- H4 }- Khypothesis?/ Y$ T* l6 V& m% ~$ l
A Some puppies have been given the new medication directly but have not
- k: S& l1 Y* ?! S7 \9 W& r% B( N& s suffered elevated temperatures as a side effect.
6 v$ o- y4 a4 P6 H B The new medication has been well received by dog breeders as a safe
4 k" e3 W. ^3 R8 v1 ^" l, ? and effective way of preventing the spread of certain common canine . K7 q" C5 A6 v4 k) I& U2 k
infections. 8 P8 t( E6 y; ]
C None of the four puppies in the kennel who had been bottle-fed with for-( m5 [* o8 `. @
mula had elevated temperatures. 1 T: z, H+ |) A1 Y7 H; ?
D An elevated temperature is a side effect of a number of medications for . d4 `5 Z; e* K2 M8 l/ Y
dogs other than the new medication administered at the kennel.
: ?- v/ t C: z) k3 p0 L E Elevated temperatures such as those suffered by most of the puppies % U. p4 ~ L7 Q. G! t2 J4 m
in the kennel rarely have serious long-term effects on a puppy's health. & V2 _" ]( A! j& m! x6 a, L/ N/ a. K
答案 C |