[单项选择]BLD Inc. produces pure bottled water. The industry has experienced rapid growth as fitness conscious consumers demand these types of products. The growth has attracted many competitors to the industry. However, marketing campaigns to differentiate their products have proven unsuccessful. The main cost to producers is the filtering system that is required to purify the water. The demand for the filtering systems, as a result of industry growth, has led to a reduction in the cost of the systems. Indicate whether the pure bottled water market is best described as a price searcher or price taker and state whether the long-run supply curve is downward-or upward-slopping. Pure bottled water maker Long run supply curve（）①A. Price searcher Downward-sloping ②B. Price taker Downward-sloping ③C. Price searcher Upward-sloping
A. ①
B. ②
C. ③

[单项选择]Looking ahead, the computer industry sees pure gold. Estimates for the number of personal computers in use by the end of the century run as high as 80 million. Then there are all the （　） industries: desks to hold computers, luggage to carry them, cleansers to polish them.
A. concessionary
B. feasible
C. hypothetical
D. auxiliary

[单项选择]Although you may think that bottled water is an option than tap, two new reports show that the store-bought stuff is actually less regulated than the water you get out of your tap almost for free.
The Food and Drug Administration (FDA．has little authority to regulate bottled brands, according to a U.S. Congressional report released recently.
While municipal water utilities are required to provide public reports for test results, bottle-water makers are not. So although you may pay a pretty penny for bottled water, that doesn’t mean it’s any better than what’s coming out of your tap. In fact, it could be worse and you’d never know it.
The new research is backed by a report from the Environmental Working Group (EWG). The nonprofit organization surveyed the labels and Web sites of nearly 200 popular bottle-water brands and found that less than 2 percent disclosed three facts that can affect safety: the water’s source, purification (净化) methods, and chemical pollutant (污染物质)
A. has safer water source
B. contains more pollutants
C. is actually less regulated
D. is more strictly regulated

[简答题]tertiary industry

[简答题]cottage industry

[填空题]Arizona produces more organic fruits and vegetables than Florida.

[填空题]