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题库 / Prep2007E1-SC-128
According to a study published in The New England Journal of Medicine, aspirin prevents blood clots just as well as a commonly used and more expensive blood-thinning drug does.
prevents blood clots just as well as a commonly used and more expensive blood-thinning drug does
prevents blood clots just as well as does a commonly used and a more expensive blood-thinning drug
prevents blood clots just as well as will a commonly used and more expensive blood-thinning drug
works just as well as a commonly used and more expensive blood-thinning drug at the prevention of blood clots
works just as well as does a commonly used blood-thinning drug, which is also more expensive, at preventing blood clots
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the main problem with option B is the article "a"
aspirin prevents blood clots just as well as does a commonly used and a more expensive blood-thinning drug
the second "a" kind of implies that there are two drugs rather than one.
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