足球的表面是由若干黑色五边形和白色六边形皮块围成的,黑、白皮块的数目比为3∶5,

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问题:

足球的表面是由若干黑色五边形和白色六边形皮块围成的,黑、白皮块的数目比为3∶5,一个足球的表面一共有32个皮块,黑色皮块和白色皮块各有多少?

考点:一元一次方程的应用
题型:解答题

在国际组织上,我国是[ ]

A.联合国的一般成员       

B.联合国安理会常任理事国    

C.没有参加任何国际组织    

D.参加了所有世界组织

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某急性心肌梗死患者,半夜突然感呼吸困难,发绀明显且咳嗽,有粉红色泡沫痰,检查心尖部第一心音减弱,舒张期奔马律,心尖部听到全收缩期2/6~3/6级杂音,诊断应首先考虑为

A.右心衰竭

B.室壁瘤

C.急性左心衰竭

D.支气管肺炎

E.心肌梗死后综合征

题型:解答题

Almost everyone agrees that America’s health-care system has the incentives all wrong. Under the present system, doctors and hospitals get paid for doing more, even if added tests, operations and procedures have little chance of improving patients’ health. So what happens when someone proposes that we alter the incentives to reward better care, not more care Well, Rep. Paul Ryan and Republicans found out. No surprise: Democrats slammed them for "ending Medicare as we know it. "

This predictably partisan reaction preying upon the anxieties of retirees—must depress anyone who cares about the country’s future. It is only a slight exaggeration to say that unless we end Medicare "as we know it," America "as we know it" will end. Spiraling health spending is the crux of our federal budget problem. In 1965—the year Congress created Medicare and Medicaid—health spending was 2.6 percent of the budget. In 2010, it was 26.5 percent. The Obama administration estimates it will be 30.3 percent in 2016. By contrast, defense spending is about 20 percent; scientific research and development is 4 percent.

Uncontrolled health spending isn’t simply crowding out other government programs; it’s also dampening overall living standards. Health economists Michael Chernew, Richard Hirth and David Cutler recently reported that higher health costs consumed 35.7 percent of the increase in per capita income from 1999 to 2007. They also project that, under reasonable assumptions, it could absorb half or more of the gain between now and 2083.

Ryan proposes to change that. Beginning in 2022, new (not existing) Medicare beneficiaries would receive a voucher, valued initially at about $ 8,000. The theory is simple. Suddenly empowered, Medicare beneficiaries would shop for lowest-cost, highest-quality insurance plans providing a required package of benefits. The health-care delivery system would be forced to restructure by reducing costs and improving quality. Doctors, hospitals and clinics would form networks; there would be more "coordination" of care, helped by more investment in information technology; better use of deductibles and co-payments would reduce unnecessary trips to doctors’ offices or clinics.

It’s shock therapy. Would it work No one knows, but two things are clear. First, as Medicare goes, so goes the entire health-care system. Medicare is the nation’s largest insurance program, with 48 million recipients and spending last year of $ 520 billion. Second, few doubt that today’s health-care system has much waste: medical care that does no good.

Under Ryan’s plan, incentives would shift. Medicare would no longer be an open ATM; the vouchers would limit total spending. Providers would face pressures to do more with less; there would certainly be charges that essential care was being denied. The Obama administration argues that better results can be achieved by modifying incentives within the existing system. Perhaps. But history suggests skepticism. It’s Ryan’s radicalism vs. President Obama’s remedy policy. Which is realistic and which is wishful thinking Burdened by runaway spending, Medicare "as we know it" is going to end. The only questions are when and on whose terms.

The text is written to answer the question()

A. Is Obama’s health-care policy wishful thinking

B. On whose terms should new medicare plan be formulated

C. Why is Ryan’s medicare plan too radical

D. Why must we end medicare "as we know it"

题型:解答题

下列哪一项不是压迫性跖痛症的临床表现()

A.行走时跖骨头处疼痛

B.侧方挤压跖骨头可加重疼痛

C.上下方向挤压跖间隙可加重疼痛

D.休息后疼痛可缓解

E.足部骨间肌萎缩

题型:解答题

善消肉食积滞,又可活血化瘀的药物是()

A.谷芽

B.神曲

C.山楂

D.莱菔子

E.麦芽

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