Most doctors in a recent survey said that annual physical examinations were effective with 【M1】

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问题     Most doctors in a recent survey said that annual
physical examinations were effective with                                 【M1】______
detecting illness in apparently healthy patients,
even there is little scientific evidence                                  【M2】______
to support the exams. The report found that physicians are largely unaware that【M3】______
current federal government guidelines did not recommend annual exams for healthy adults
with symptoms. The study also suggested that
in performing annual physicals many physicians                            【M4】______
routinely order screening tests that had not been
proved useful for patients with no symptoms.                              【M5】______
Sixty-five percent of 783 physicians who completed a questionnaire maintained that【M6】______
an annual physical was necessary, and 55 percent believed that annual physicals for healthy
adults were recommended by national organizations. The researchers found that even
many a doctors who were aware of published guidelines
continued to perform annual physicals,                                    【M7】______
because patients wanted them, or because
they believed the procedure gave them the chance                          【M8】______
to offer advice about preventive health measures.
Among the physicians, those are younger,                                  【M9】______
the women, the gynecologists and those in private practice
were the most inclined ones to favor                                      【M10】______
annual exams.
【M9】

选项

答案those^are改成who

解析 句式结构及定语从句。考虑上下文可以看出这里是要求并列的主语,而those应该是主语中的一个,如果不是则构成“nm-on sentence”,因此将“those are younger”分句变成名词的唯一方法是在those后面加 who变成定语从句。
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