2. 考研
  3. A study found that the radiation from CT scans—the tests regularly used to【C1】______internal injuries or signs of cancer—is like

A study found that the radiation from CT scans—the tests regularly used to【C1】______internal injuries or signs of cancer—is like

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问题     A study found that the radiation from CT scans—the tests regularly used to【C1】______internal injuries or signs of cancer—is likely【C2】______for 2 percent of cancer cases in the United States.
   【C3】______lots of Americans undergo CT scans, that research is unlikely to【C4】______in doctors’ offices: Two-thirds of patients in a new JAMA study reported【C5】______nothing of the risks of the diagnostic procedure.【C6】______, 17 percent felt like they played an active role in a discussion【C7】______whether this diagnostic test was the best path forward.
    "Our study indicates that most decisions to undergo outpatient CT are【C8】______by physicians and risk communication is【C9】______," a team of researchers led by University of Colorado’s Tanner Caverly writes. "The risk communication that took place had limited【C10】______: respondents who recalled discussing the benefits and risks of imaging did not have better【C11】______."
    Would a conversation about the【C12】______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【C13】______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【C14】______a chest x-ray.
    There’s a growing movement in medicine right now to【C15】______on unnecessary treatment or【C16】______of care. Much of this has been led by a group called Choosing Wisely, which has【C17】______with dozens of medical societies to come up with lists of【C18】______that doctors themselves don’t think they ought to be using.
    One of their key messages is that more care isn’t【C19】______better; all medicine comes with some level of risk That message does not,【C20】______, seem to be delivered in the doctor’s offices studied here.
【C3】
选项 A、Although
B、While
C、Unless
D、If
答案B
解析 此处填入连词，表明前后句子的逻辑关系。前句讲很多美国人在接受CT扫描，后句讲这项研究不太可能——在医生的办公室，这两种情况是同时存在的，可以理解为：在“很多美国人都接受CT扫描”这样的背景或情况下，该项研究不太可能——在医生的办公室。B项While“当……时，在……时”符合此处的语义逻辑。
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