2. 外语
  3. A. negligible B. overuse C. procedures D. abnormal E. patients F. potential G. complied H. collaborated I. made J. involved

A. negligible B. overuse C. procedures D. abnormal E. patients F. potential G. complied H. collaborated I. made J. involved

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问题     A. negligible B. overuse C. procedures D. abnormal E. patients
    F. potential G. complied H. collaborated I. made J. involved
    K. infrequent L. possessed M. detect N. provisions O. impact
    A study found that the radiation from CT scans—the tests regularly used to【C1】______ internal injuries or signs of cancer—is likely responsible for 2 percent of cancer cases in the United States.
    While lots of Americans undergo CT scans, that research is unlikely to come up in doctors’ offices: Two-thirds of【C2】______in a new JAMA study reported hearing nothing of the risks of the diagnostic procedure. Meanwhile, 17 percent felt like they played an active role in a discussion over, whether this diagnostic test was the best path forward.
    "Our study indicates that most decisions to undergo outpatient CT are【C3】______ by physicians and risk communication is【C4】______," a team of researchers led by University of Colorado’s Tanner Caverly writes. "The risk communication that took place had limited【C5】______: respondents who recalled discussing the benefits and risks of imaging did not have better knowledge."
    Would a conversation about the【C6】______ risks have made a difference? Caverly’s team asked a few other questions that suggest it would: Patients undergoing the scan have little idea about the radiation【C7】______. One-quarter self-identified radiation as a risk of a CT scan; 37 percent were able to identify CT scans as having a higher level of radiation than a chest x-ray.
    There’s a growing movement in medicine right now to cut back on unnecessary treatment or 【C8】______ of care. Much of this has been led by a group called Choosing Wisely, which has 【C9】______ with dozens of medical societies to come up with lists of【C10】______ that doctors themselves don’t think they ought to be using.
    One of their key messages is that more care isn’t necessarily better; all medicine comes with some level of risk. That message does not, however, seem to be delivered in the doctor’s offices studied here.
【C5】
选项
答案O
解析 空格前的形容词limited提示此处需要名词作动词had的宾语。下文提到进行过CT扫描的好处和风险讨论的受访者对该问题并无更深了解，可推知即使讨论过，其影响也有限，名词impact符合题意。
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