[判断题]The responsibility of firms toward customers can be enforced by specific groups of consumers.

[单项选择]Firms can ensure responsibility to customers by ______
A. safe manufacturing techniques.
B. proper disposal of toxic waste.
C. employee diversity programs.
D. soliciting feedback about products.
E. full financial disclosure.

[判断题]Firms can merge only if they are producing similar products.

[单项选择]A. Only a third of the business firms can survive more than 5 years.
B. Currently, two thirds of the business firms will collapse in their first year.
C. If you have the correct information, starting a new business is easy.
D. You must have a two-third majority consent to start a branch office.

[判断题]Firms can be liquid even if they are not holding large amounts of cash and short-term securities.

[填空题] Can Business Be Cool
Why a growing number of firms are taking global warming seriously.
Companies supporting environment protection
Rupert Murdoch is no green activist. But in Pebble Beach later this summer, the annual gathering of executives of Mr Murdoch’s News Corporation--which last year led to a dramatic shift in the media conglomerate’s attitude to the Internet--will be addressed by several leading environmentalists, including a vice-president turned climate-change movie star. Last month BSkyB, a British satellitetelevision company chaired by Mr. Murdoch and run by his son, James, declared itself "carbon-neutral", having taken various steps to cut or offset its discharges of carbon into the atmosphere.
The army of corporate greens is growing fast. Late last year HSBC became the first big bank to announce that it was carbon-neutral, joining other financial institutions, including Swiss Re, a reinsurer, and Goldman

[单项选择]The author’s attitude toward Saccheri’s study can be best described as one of
A. qualified approval
B. tempered suspicion
C. mild disdain
D. enthusiasm and optimism
E. neutrality and disinterest

[单项选择]Firms in perfectly competitive markets and firms operating in a market characterized by monopolistic competition have several things in common. Which of the following is least likely one of them（）
A. Both maximize economic profit.
B. Both face perfectly elastic demand curves.
C. Both operate in markets that have low or no barriers to entry.

[单项选择]
Low speed bicycle crashes can badly injure or even kill children if they fall onto the ends of the handlebars (车把). So a team of engineers is redesigning it to make it safer.
Kristy Arbogast, a bioengineer at the Children’s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues. The cases they reviewed about serious abdominal injuries in children in the past 30 years showed that more than a third were caused by bicycle accidents. "The task was to identify how the injuries occurred and come up with seine countermeasures," she says.
By interviewing the children and their parents, Arbogast and her team were able to reconstruct many of the accidents and identified a corrosion cause for serious injuries. They discovered that most cases occur when children hit an obstacle at slow speed, causing them to topple (摇摆) over. To maintain their balance the children turn the handlebars through 90
A. why the children and their parents were interviewed
B. how serious abdominal injuries occur.
C. when the children turn the handlebars
D. what stops bicycle accidents