试题与答案

在“探究合力与分力关系”实验中,需要将橡皮条的一端固定在水平木板上,另一端系上两

题型:问答题

题目:

在“探究合力与分力关系”实验中,需要将橡皮条的一端固定在水平木板上,另一端系上两根细绳,细绳的另一端都有绳套.实验中需用两个弹簧秤分别勾住绳套,并互成角度地拉橡皮条.某同学认为在此过程中注意以下几项,其中正确的是 (  )

A.两根细绳必须等长

B.橡皮条应与两绳夹角的平分线在同一直线上

C.在使用弹簧秤时要注意使弹簧秤与木板平行

D.实验中,把橡皮条的另一端拉倒o点时,两个弹簧秤之间夹角90°,以便于算出合力大小

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:维生素B6可抑制泌乳素分泌,减轻促胃肠动力药(莫沙比利除外)泌乳反应。

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题型:阅读理解

A different sort of generation gap is developing in the workplace. Someone --- specifically the father-daughter team of Larry and Meagan Johnson --- has figured out that on some American job sites, five generations are working side by side.

In their new book about generations in the workplace the pair argue that while such an age difference adds a lot of texture and a variety of life experiences, it can also bring tensions and conflicts.

The Johnsons are human-resource trainers and public speakers. Dad Larry is a former health-care executive; daughter Meagan is a onetime high-level sales manager.

Here are the oldest and youngest of the five generations they identify:

They call the oldest group Traditionals, born before 1945. They were heavily influenced by the lessons of the Great Depression and World War Two. They respect authority, set a high standard of workmanship, and communicate easily and confidently. But they’re also stubbornly independent. They want their opinions heard.

At the other extreme are what the Johnsons call Linksters, born after 1995 into today’s more complicated, multi-media world. They live and breathe technology and are often social activists.

You won’t find many 15-year olds in the offices of large companies, except as volunteers, of course, but quite old and quite young workers do come together in sales environments like bike shops and ice-cream stores.

The Johnsons, Larry and Meagan, represent a generation gap themselves in their work with jobsite issues. The Johnsons’ point is that as the average lifespan continues to rise and retirement dates get delayed because of the tight economy, people of different generations are working side by side, more often bringing with them very different ideas about company loyalty and work values.

The five generations are heavily influenced by quite different events, social trends, and the cultural phenomena of their times. Their experiences shape their behavior and make it difficult, sometimes, for managers to achieve a strong and efficient workplace.

Larry and Meagan Johnson discuss all this in greater detail in a new book, “Generations, Inc.: From Boomers to Linksters --- Managing the Friction Between Generations at Work,” published by Amacom Press, which is available in all good bookstore from this Friday.

小题1:The type of generation gap in paragraph 1 refers to the difference in beliefs ________.

A.between managers and workers

B.among family members

C.among employees

D.between older and newer companies小题2:Which of the following statements is NOT true about Traditionals?

A.They’ve learned much from war and economic disaster.

B.They’re difficult to work with as they are stubborn.

C.They respect their boss and hope to be respected.

D.They’re independent workers with great confidence.小题3: According to the passage, the Linksters are usually ________.

A.found working in the offices of large companies

B.influenced by media and technology

C.enthusiastic multi-media activists

D.ice-cream sellers小题4: According to the passage, modern workforces are more diverse because ________.

A.people want to increase their average lifespan

B.many young people are entering the workforce

C.employees with different values can benefit their companies

D.retirement dates are being delayed for economic reasons小题5:What’s the main purpose of the passage?

A.To promote a new book by Larry and Meagan Johnson.

B.To describe the five different workplace generations.

C.To introduce the Johnsons’ research about diverse workforces.

D.To identify a major problem in modern workforces.

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