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[Critical Reasoning]
试题详情
题目：
Which of the following most logically completes the passage?
Mastitis is an infection of the udder in cows that, although not dangerous, causes them to give poor-quality milk. Most cases of mastitis are caused by the bacterium Staphylococcus aureus, against which antibiotics are ineffective. However, a related bacterium, Staphylococcus simulans, quickly clears up even severe infections of S. aureus simply by displacing the bacteria. S. simulans is nevertheless unlikely to become the preferred treatment for cases of mastitis, since ______.
选项:
A、certain dangerous bacteria that normally cannot take hold can do so in the presence of S. simulans
B、the current resistance of S. aureus to antibiotics derives in part from a past pattern of overuse of those antibiotics
C、the milk from cows infected with S. aureus is generally not of such poor quality as to be entirely unusable
D、careful farming practice can reduce the incidence of mastitis to a minimum
E、the only symptom of mild cases of mastitis is the deterioration in the quality of the milk produced
答案:
A
提问：
希望老师可以再解答一下，讲一下A和E选项。我做题时候是把A判断为了不相关，因为说的是certain bacteria的问题，和Ssimulans作为一个treatment感觉关系不大。E我的思路是，既然只能从奶来判断是否得了mastitis，那就不能提前知道哪些牛是有病的然后用Ssimulans来治疗，因此削弱了这个treatment。
解答：
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阅读1622
提问：
希望老师可以再解答一下，讲一下A和E选项。我做题时候是把A判断为了不相关，因为说的是certain bacteria的问题，和Ssimulans作为一个treatment感觉关系不大。E我的思路是，既然只能从奶来判断是否得了mastitis，那就不能提前知道哪些牛是有病的然后用Ssimulans来治疗，因此削弱了这个treatment。
解答：
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阅读1623
提问：
take hold在这里是什么意思？
解答：
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阅读1771
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