In the first place, the makers of Cerberus dog food assume that the cause of obesity in dogs is the same as the cause in humans. Given the vast differences between the exercise patterns and basic diets of humans and dogs, this assumption is highly dubious. Lacking evidence to support this claim, the argument is unacceptable.
In the second place, the author assumes that the gastrointestinal systems of dogs and humans are sufficiently similar to ensure that treatment that is effective on humans will be equally effective on dos. Again, this is a highly dubious assumption due to the obvious physiological differences between humans and dogs. Since no evidence has been offered to support this assumption, it too can be rejected.
In conclusion, this argument is unconvincing. To strengthen the argument evidence is required to substantiate the assumption that dogs and humans are sufficiently similar in both their diets and their physiology to warrant similar treatment.
小编提醒:考生们可在日常生活中多读范文,多练笔,培养出好的语感和逻辑,这样才能在考试中写出优秀的作文。
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