题目内容
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A、both markets for goods and services and markets for labor services.
B、markets for goods and services but not to markets for labor services.
C、markets for goods and services but not to markets for factors of production.
D、all markets except those in which demand is derived demand.
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听力原文：Millions of people around the world use Microsoft office, which comes with Microsoft Word for creating documents, Microsoft Excel spreadsheet, Outlook e-mail and other applications. But now Google is offering some of those same applications with its free, web-based services. Google launched it four years ago. But recently it launched a free spreadsheet program and word processing program that are acquired from another company. Together, they are now called Google Docs & Spreadsheets. Well, neither the word processing or spreadsheet pro- gram is as full-featured as Microsoft's offering, they do provide users with the basic tools they need to write and calculate. Perhaps more important, they also allow you to work from home, office or the road without having you save your files, because they are saved and backed up on Google secure servers. They are also easy to share, facilitating collaboration between people in different parts of the world.Of course, if you are not online, you don't have access. So forget about writing that letter or polishing off that spreadsheet at 37,000 feet.
What programs does google launch recently？
A．A free word processing program and excel program.
B．A free word processing program and excel program.'
C．A free spreadsheet program and word processing program.
D．A free spreadsheet program and excel program.
A、Language Acquisition Device
B、Generative Grammar
C、Innateness Hypothesis
D、Universal Grammar
Mark trouble spots with bright tapes.The first and last steps on stairs are usually high-risk accident areas.Applying bright tapes and using bright light in these areas would make these spots easier to see.
Put grab bars(扶手) in the bathroom.A large number of falls occur in the bathroom.This is unfortunate(不幸的) because it's easy to make the area safe from accidents.Putting grab bars in the bathroom gives people something to hang on to.
Invest in a personal alarm.A personal alarm can be started if a person falls or otherwise gets in trouble.With the push of a button, the alarm automatically sends a signal, which gets someone to call and see if the person needs help.
21.By making some very simple changes at home, old people _____.
A.are free from home accidents
B.can improve their health
C.are likely to live longer
D.can live more safely
22.Last Steps on stairs may become a high-risk accident area if they are _____.
A.not painted in a different color
B.not marked with bright tapes
C.fixed with grab bars
D.very brightly lit
23.Falls in the bathroom are considered to be unfortunate because _____.
A.they can easily be avoided
B.old people seldom fall in bathrooms
C.grab bars do not help to prevent falls
D.bathroom accidents are difficult to prevent
24.A personal alarm is designed for old people to _____.
A.detect safety conditions at home
B.avoid falls in the bathroom
C.send out signals for help
D.make phone calls easily
25.The purpose of this passage is to tell people that _____.
A.most old people die from accidents at home
B.up to half of home accidents could be prevented
C.falls at home can be avoided by taking some simple measures
D.protection of old people should be the first concern for the public
A、prompter
B、resource-provider
C、assessor
D、organizer
A、a perfectly inelastic supply of labor.
B、a perfectly elastic supply of labor.
C、a downward-sloping demand for labor.
D、an upward-sloping demand for labor.
A、The value of the marginal product curve is the labor demand curve for competitive, profit-maximizing firms.
B、A competitive, profit-maximizing firm hires workers up to the point where the value of the marginal product of labor equals the wage.
C、By hiring labor up to the point where the value of the marginal product of labor equals the wage, the firm is producing where price equals marginal cost.
D、All of the choices are correct.
A、$200
B、$8
C、$5
D、There is insufficient information available to answer this question.
A、decreases the firm's total revenue.
B、increases the firm's profit.
C、decreases the firm's total cost.
D、decreases the firm’s profit.
A、the fact that workers who do similar work should be paid the same wage.
B、the fact that some workers live further from their jobs than do other workers.
C、a wage difference that is distinguishable on the basis of monetary characteristics.
D、a wage difference that arises from nonmonetary characteristics of different jobs.
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