134. (31696-!-item-!-188;#058&004702) Among lower-paid workers, unionmembers are less likely than nonunion members to be enrolled in lower-endinsurance plans imposing stricter limits on medical services and requiringdoctors to see more patients, and spend less time with each. (A) imposing stricter limits onmedical services and requiring doctors to see more patients, and spend (B) imposing stricter limits onmedical services, requiring doctors to see more patients, and spending (C) that impose stricter limits onmedical services, require doctors to see more patients, and spend (D) that impose stricter limits onmedical services and require doctors to see more patients, spending (E)that impose stricter limits on medical services, requiring doctors to see morepatients and spending
正确答案选D, 我想请教D选项最后的那个spending,作为伴随状语,它的主语是什么呢? 谢谢NN
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