Doctors who make a habit of measuring blood pressure in only one arm maybe doing their patients a disservice. l.______ A ne

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问题     Doctors who make a habit of measuring blood pressure in only one
arm maybe doing their patients a disservice. l.______
    A new study shows that differences in blood pressure readings
about a patient’s right and left arm could be a sign of vascular disease 2.______
and a greater risk of dying from heart disease. The study, published in
The Lancet, suggests doctors always took blood pressure readings on 3.______
both arms — an existing guideline that is widely neglected. 4.______
    Recommendations to measure both arms exist in both British and
American blood pressure management guidelines, but it is regularly followed." 5.______
    In Britain, fewer than half of all doctors say they make a habit of
measuring blood pressure in both arms, Dr. Clark said, statistic that is 6, ______
likely to be similar in the United States.
    The consequences could be significant. In their study, Dr. Clark and
his colleagues pooled data from their own research and from about two
dozens other studies looking at differences in systolic blood pressure 7.______
readings between the two arms in patients. Systolic pressure, the top
number in a reading, reflects the number of pressure that blood exerts 8.______
on vessels while the heart is contracting.
    Although seemingly minor, it was associated with a 70 percent
great risk of dying from heart disease. The precise number of the 9.______
higher or lower systolic reading was less important than the extent of
the difference between them. A difference of even 10 millimeters was
enough to raise the risk of peripheral vascular disease, because the need 10.______
for measuring blood pressure in both arms was clear.  

选项

答案maybe——may be

解析 本题为副词误用。根据句子的结构,doctors是本句的主语,who引导的定语从句作为主语的后置定语,如果用副词maybe就缺少了谓语动词,成为不完整句,故用情态动词may和系动词be搭配使用。
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