宁浩导演的电影《疯狂的石头》中，饰演“道哥”的是哪位内地实力男演员？

In 1998 consumers could purchase virtually anything over the Internet. Books, compact discs, and even stocks were (1) from World Wide Websites that seemed to (2) almost daily a few years earlier, some people had predicted that consuners accustomed to shopping in stores would be (3) to buy things that they could not see or touch (4) . For a growing number of time-starved consumers, however, shopping from their home computer was proving to be a convenient (5) to driving to the store.

A research estimated that in 1998 US consumers could purchase $ 7.3 billion of goods over the Internet, double the 1997 total. Finding a bargain was getting easier, (6) the rise of online auctions and Websites that did comparison shopping on the Internet for the best (7) .

For all the consumer interest, (8) in eyberspaee was still a largely (9) business, however. Internet pioneer Amazon. eom, which began selling books in 1995 and later (10) into recorded music and videos, posted (11) of $ 153.7 million in the third quarter, up from $ 37.9 million in the same period of 1997. Overall, (12) , the company’ s loss widened to $ 45.2 million from $9.6 million, and analysts did not expect the company to turn a profit (13) 2001. (14) the great loss, Amazon. tom had a stock market value of many billions, reflecting investors’ (15) about the future of the industry.

Internet retailing appealed (16) investors because it provided an efficient means for reaching millions of consumers without having the cost of operating (17) stores with their armies of salespeople. Selling online carried its own risks, however, (18) so many companies competing tor consumers’ attention, price competition was (19) and profit (20) thin or nonexistent.

15（）

A.enthusiasm

B.depression

C.optimism

D.pessimism

在经济生活中，经常发生没有违反法律法规的要求，却违反了会计职业道德的行为。()

白色垃圾

安全帽应在（）内使用，每年一次定期检查，发现异常现象不得佩戴。

A.试用期

B.预定期

C.有效期

D.规定期

送风量不足，可能的原因是：（）

A、风口阀门开得过大

B、风机皮带轮松弛

C、风机管尺寸过大

D、风机盘管调速器档位设置过高。