1. GWD-21-Q21//////////////////////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 .
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 题读的比较不清楚 1. GWD-18-Q15？？？？/////////////////////////Fact: Asthma, a bronchial condition, is much less common ailment than hay fever, an allergic inflammation of the nasal passages. Fact: Over 95 percent of people who have asthma also suffer from hay fever.
If the information given as facts above is true, which of the following must also be true?
A. Hay fever is a prerequisite for the development of asthma. B. Asthma is a prerequisite for the development of hay fever. C. Those who have neither hay fever nor asthma comprise less than 5 percent of the total population. D. The number of people who have both of these ailments is greater than the number of people who have only one of them. E. The percentage of people suffering from hay fever who also have asthma is lower than 95 percent. 晕 怎么都倒不过来 为什么答案是E
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