问题 实验题

在测定“小灯泡的电功率”的实验中,已知电源电压为6V,小灯泡的额定电压为2.5V,小灯泡的电阻约为10Ω,滑动变阻器上标有“20Ω 1A”字样。图是小向同学没有连接完的实物电路。

(1)请你用笔画线代替导线,将实物电路连接完整;

(2)实验中,小向同学连接好电路后,闭合开关,移动滑片,发现小灯泡始终不亮,且电压表有示数,电流表无示数,则故障的原因可能是                                                      ;

(3)故障排除后,闭合开关,移动滑动变阻器的滑片到某一点,电压表的示数如图甲所示,为            V,要测量小灯泡的额定功率,应将滑片P向            端滑动(选填“左”或“右”);

(4)当小灯泡正常发光时,电流表的示数如图乙所示,则小灯泡的额定功率是                 W。 

答案

(1)“略”

(2)小灯泡断路

(3)2.2V    右

(4)0.6W

阅读理解

Narayana Hrudayalaya, a complex of health centers based in southern India, offers low-cost, high-quality specialty care in a largely poor country of 1.2 billion people. By thinking differently about everything from the unusually high number of patients it treats to the millions for whom it provides insurance, the hospital group is able to continually reduce costs. Narayana Hrudayalaya’s operations include the world’s largest and most productive cardiac (心脏病的) hospital, where the average open-heart surgery runs less than $2,000, a third or less what it costs elsewhere in India.

Narayana Hrudayalaya’s origins date back to 2001, when it built its massive cardiac center on the outskirts (市郊)of Bangalore. But it has expanded since then into what founder Dr. Devi Shetty calls a "health city," a series of centers specializing in eye, trauma, and cancer care. Narayana Hrudayalaya now manages or owns hospitals in 14 other Indian cities.

Expanding access is paired with a ongoing focus on efficiency. Typically, says Shetty, private hospitals in India focus on patients who can easily afford treatment. "We did it the other way around," he says. "This hospital is for poor people, but we also treat some rich people. We don’t look at people who are sgabbily dressed and have trouble paying as outsiders. "  Narayana Hrudayalaya’s flagship hospital has 3,000 beds and negotiates for better prices and buys directly from manufacturers, cutting out distributors.

In addition to cost-cutting, Narayana Hrudayalaya finds creative ways to make the economics work. The company started a micro-insurance program backed by the government that enables 3 million farmers to have coverage for as little as 22 cents a month in premiums(保险费). Patients who pay discounted rates are in effect compensated by those who pay full price

Doing something--doing more, actually--is the point. By 2017, Shetty, 58, plans to expand from 5,000 beds throughout India to 30,000. Before becoming one of India’s best-known health-care entrepreneurs, Shetty was its best-known heart surgeon. He was interrupted in surgery one day during the 1990s by a request to make a house call. "I said, 'I don’t make home visits,' " Shetty says, "and the caller said, 'If you see this patient, the experience may transform your life.' " The request was from Mother Teresa. Inspired by the her work with the poor, he then set out to create a hospital to deliver care based on need, not wealth.  "One lesson she taught me," he says, quoting a saying he keeps framed in his office, "is 'Hands that sew are holier than lips that pray.' "

小题1:Narayana Hrudayalayastarted a micro-insurance to _______.

A.cut down on the cost of the treatment

B.get the support of the government

C.make the company run smoothly

D.attract more people to its hospital小题2:We can infer from the passage that _______.

A.the cost of medicine care in India is very low

B.Shetty wouldn’t have succeeded without Mother Teresa

C.Shetty and his colleagues are likely to make home visits now

D.Shetty has expanded his hospitals to most of other cities in India小题3:Why did Shetty build the massive cardiac center in 2001?

A.He wanted to build a health city.

B.He was motivated and decided to help more people.

C.He intended to develop his career in different areas.

D.He meant to help more poor people get free treatment.小题4:How would you understand the underlined sentence in the last paragraph ?

A.It’s doing something and doing more that really matters.

B.It’s not easy to take positive action to contribute to society.

C.Healthcare workers are the holiest persons in the world.

D.Praying alone is of no significance in face of difficult situation.

判断题