问题 单项选择题

下面的描述中表达错误的是

A.公有继承时基类中的public成员在派生类中仍是public的

B.公有继承时基类中的private成员在派生类中仍是private的

C.公有继承时基类中的protected成员在派生类中仍是protected的

D.私有继承时基类中的public成员在派生类中是private的

答案

参考答案:B

解析: C++中,继承方式控制了基类中具有不同访问属性的成员在派生类中的访问属性。基类中的私有成员在派生类中是隐蔽的,只能在基类内部访问。所以B) 选项是错误的。派生类中的成员不能访问基类的中私有成员,但可以访问基类中的公有成员和保护成员。此时派生类对基类中各个成员的访问能力与继承方式无关,但继承方式将影响基类成员在派生类中的访问控制属性,基类中公有和保护成员在派生类中的访问控制属性将随着继承方式而改变:派生类从基类公有继承时,基类的公有成员和保护成员在派生类中仍然是公有成员和保护成员;派生类从基类私有继承时,基类的公有成员和保护成员在派生类中都改变为私有成员,派生类从基类保护继承时,基类的公有成员在派生类中改变为保护成员,基类的保护成员在派生类中仍然为保护成员.所以,A) 、C) 和D) 选项都是正确的。

阅读理解

Yucai Middle School will have a School Day on Friday.Students don't need to have any classes.Instead,they are going to do a lot of things for fun.Here is a poster for it.

The most wonderful game of the year

Meet our school basketball stars

Basketball Court 3:00 p.m.— 5:00 p.m.

Tel:375 — 7682

 Water Sports

It's really cool!

Xingsha Beach The whole afternoon

Tel:375 — 7442

Talent Show

Are you good at singing,dancing,acting or playing the guitar?

Come and show yourself!

Music Hall 7:00 p.m.— 9:00 p.m.

Tel:375 — 9876

Chess is fun!

Different kinds of chess

Who will win at last?

Chess Club  8:00 a.m.— 10:30 a.m.1:00 p.m.— 3:30 p.m.

Tel:375 — 7465

For further information,please call the school office.Just do it! Enjoy yourself!

小题1:You can _______  in the morning or in the afternoon.

A.have the chess competition

B.go to the talent show

C.watch the basketball game

D.have water sports小题2:If you want to see the school basketball stars,you can go at _______.

A.8:00 a.m.— 10:30 a.m.

B.3:00 p.m.— 5:00 p.m.

C.1:00 p.m.— 3:00 p.m.

D.7:00 p.m.— 9:00 p.m.小题3:You can have water sports _______.

A.at Xingsha Beach

B.at the music hall

C.at the basketball court

D.at the chess club小题4:If you are good at singing and dancing,you should call at _______.

A.375-7682

B.375-7442

C.375-9876

D.375-7465小题5:If you want to learn about further information,what should you do?

A.See the poster.

B.Ask your classmates.

C.Call the school office.

D.Go to the school office.

单项选择题

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 medicare reform proposed by Ryan would have the effect of()

A. reducing budget in health-care and improving its efficiency

B. giving doctors and hospitals more power in health-care

C. reducing the burden of doctors and hospitals in health-care

D. shocking the medicare beneficiaries into panic and anxieties