问题 单项选择题

金属容器内、隧道内、水井内以及周围有大面积接地导体等工作地点狭窄,行动不便的环境应采用( )V安全电压;水上作业等特殊场所应采用( )V安全电压。

A.12;6

B.36;24

C.42;24

D.36;12

答案

参考答案:A

阅读理解

When I was struggling with cancer a few years ago, my wife and I formed our own "couple caution circle".  Anytime a doctor came with news of my progress, my wife would give me a big hug. The reports were seldom good during the early stages of my illness, and one day a doctor brought particularly frightening news. Staring at my reports, he said in a low voice, “It doesn't look like you're going to make it.”

Before I could ask him a question, my wife stood up, handed me my clothes, adjusted the tubes fastened to my body and  said, “Let’s get out of here. This man is a risk to your health.” As she helped me struggle to the door, the doctor came near us. “Stay back,” demanded my wife. “Stay away from us.”

As we walked together down the hall, the doctor attempted to catch up with us “Keep going,” said my wife, pushing the intravenous(静脉注射的)stand. “We’re going to talk to someone who really knows what is going on. Then she held up her hand to the doctor. “Don't come any closer to us.”

The two of us moved as one. We escaped to the safety and hope of a doctor who did not confuse diagnosis with conclusion. I could never have made that walk toward wellness alone.

小题1:.

From the passage we know__________.

A.hearing that her husband was not going to make it, the wife went out of her mind

B.the wife's decision in crisis contributed to the husband’s wellness

C.the husband was diagnosed with cancer by mistake

D.the husband became weaker and weaker as a result of the treatment conducted by the doctor小题2:.

What's the author's feeling when writing the passage?

A.Angry.

B.Thankful.

C.Excited.

D.Sad.小题3:.

What can be inferred from the passage?

A.The wife was a woman hard to get along with.

B.The doctor was a dangerous man.

C.The wife loved her husband very much.

D.The husband was a man who believed everything would be OK.小题4:.

What would be the best title for the passage?

A.A Happy Couple in Crisis

B.Struggle with Cancer

C.In Crisis, Become As One

D.Don't Believe the Doctor

问答题

Exactly where we will stand in the long war against disease by the year 2050 is impossible to say. (46) But if developments in research maintain their current pace, it seems likely that a combination of improved attention to dietary and environmental factors, along with advances in gene therapy and protein targeted drugs, will have virtually eliminated most major classes of disease.
From an economic standpoint, the best news may be that these accomplishments .could be accompanied by a drop in health-care costs. (47) Costs may even fall as diseases ’are brought under control using pinpointed, short-term therapies now being developed. By 2050 there will be fewer hospitals, and surgical procedures will be largely restricted to the treatment of accidents and other forms of trauma. Spending on nonacute care, both in nursing facilities and in homes, will also fall sharply as more elderly people lead healthy lives until close to death.
One result of medicine’s success in controlling disease will be a dramatic increase in life expectancy. (48) The extent of that increase is a highly speculative matter, but it is worth noting that medical science has already helped to make the very old (currently defined as those over 85 years of age) the fastest growing segment of the population. Between 1960 and 1995, the U.S. population as a whole increased by about 45%, while the segment over 85 years of age grew by almost 300%. (49) There has been a similar explosion in the population of centenarians, with the result that survival to the age of 100 is no longer the newsworthy feat that it was only a few decades ago. U.S. Census Bureau projections already forecast dramatic increase in the number of centenarians in the next 50 years: 4 million in 2050, compared with 37, 000 in 1990.
(50) Although Census Bureau calculations project an increase in average life span of only eight years by the year 2050, some experts believe that the human life span should not begin to encounter any theoretical natural limits before 120. years. With continuing