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1.Experts estimate that insurance companies' tardiness in paying doctors for legitimate medical claims adds approximately 10 percent in overhead costs for physicians. Insurance companies counter that the tardiness sometimes results from billing errors made by the doctors themselves. Since dealing with these billing errors costs the insurance companies time and money, it is clear that insurance companies do not have a significant economic incentive to delay claim payments to doctors.
Which of the following pieces of information, if true, weakens the conclusion above?
Some doctors who submit accurate bills to insurance companies still receive tardy payments.
The cost to the insurance companies to process incorrect bills from doctors' offices is roughly equivalent to the increased costs that physicians accrue as a result of tardy payments from insurance companies.
A rising proportion of medical claims submitted by doctors to insurance companies are deemed illegitimate by those insurance companies.
The billing errors made by doctors' offices are typically very minor, such as the submission of a claim with an outdated patient home address.
The overhead costs incurred by doctors as a result of delayed insurance payments result in an increase in the premiums paid by consumers to health insurance companies that far exceeds any increase in the fees paid to doctors by insurance companies
答案D我没有问题 我是有点没理解题干的逻辑其实...专家说保险公司会延迟支付费用导致医生的cost增加，然后保险公司反驳，一些延迟是医生自己造成的，并且这些失误会增加保险公司成本所以他们没必要拖延？
这个逻辑完全理不顺啊...
2.For-profit colleges serve far fewer students than either public or private non-profit colleges. At the same time, relative to non-profit colleges, for-profit colleges draw a disproportionate share of federal and state financial aid, such as tuition grants and guaranteed loans, for their students. It must be, then, that for-profit colleges enroll a greater proportion of financially disadvantaged students than do non-profit colleges.
In assessing the argument above, it would be most useful to compare
the proportion of financially disadvantaged students served by public and private non-profit colleges
the extent to which for-profit and non-profit colleges engage in fraudulent practices in helping their students obtain unneeded federal and state financial aid
the number of students receiving federal and state financial aid at for-profit colleges and non-profit colleges
the quality of education received by financially disadvantaged students at for-profit colleges and non-profit colleges
the rates of default on loan repayments among graduates of for-profit and non-profit colleges
答案B 我做题时排除了一遍又一遍就是选不出来。我实在想不通，经济状况不好的学生和非必需的救助之间怎么会有关系啊... 要不然就是我对financially disadvantaged和unneeded federal and state financial aid理解有错吗？
3.In a certain country, insurance companies pay only a fixed percentage – set by law and uniform across all insurance companies – of the fees actually billed by healthcare providers; the remaining balance is waived. Patients without insurance coverage, however, are legally responsible for the full amount of those fees. If the fixed percentage set for insurance companies is changed, healthcare providers will adjust their fees so that the insurance companies pay the same dollar amount that they would have paid before the change.
The information given most strongly supports which of the following general claims about the country described?
If the percentage prescribed by law for insurance companies is decreased, private patients without insurance coverage will pay more for healthcare services.
The dollar amount paid by insurance companies to healthcare providers will not change unless the legally specified percentage is changed.
If the number of patients without insurance coverage grows beyond the number of patients covered by insurance, healthcare providers will adjust their billing
practices according to the needs of those patients.
If an economic recession causes the healthcare industry to suffer, the legally prescribed percentage paid by insurance companies will be increased.
Acquiring insurance coverage, if possible, would be a sound economic decision for any patient.
答案选A 我实在没理解这里healthy service和保险公司的关系，是对于投保人来说他们两方共同承担了相应的医疗费用吗？我读题的时候对于他俩关系的理解是保险公司给provider钱啊...选A答案的解析感觉意思是因为adjust的缘故provider会提高bill,然后没投保的人就会交更多钱。
4.Improved technology and equipment often result in fewer injuries during high-risk activities such as rock climbing and scuba diving. But participant education also plays a large role in reducing the number of injuries sustained during these activities. People who are poorly trained in these activities run a much higher risk of injury even if provided with the latest and best equipment.
Which of the following can be properly inferred from the information above?
Training is a more important safety factor than equipment in high-risk activities
People who are properly trained in their activities do not sustain injuries.
The safety benefits of the latest equipment can be offset by inadequate preparation.
Rock climbing and scuba diving are more risky than any other activities
People with the latest equipment often neglect proper training.
答案C没问题，但我想知道怎么排除A的。解析说是没有more这个关系，但是感觉题目 People who are poorly trained in these activities run a much higher risk of injury even if provided with the latest and best equipment. 这句话感觉就说了培训是前提啊。难道是说前提不一定是更重要的？...
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发表于 2018-12-4 20:58:15
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