微生物的一个生长周期包括（）.A.延滞期 B.对数生长期 C.分化期 D.衰亡期

如果请你担任历史记录片《1908年的北京东交民巷》的导演，在拍摄当时的北京东交民巷时，不该设计的场景是（）

A.许多外国公使在散步

B.大量北京居民在准备晚餐

C.某国使馆在举办舞会

D.有外国军队在军事操练

原告郝大海，系河南省某村村民，1985年在被告河南省某县工商分行所属金融服务所活期存款9000元．1989年4月3日上午，郝大海持存折到金融服务所取款3000元，尚余6000元．当日下午，郝大海发现存折丢失，因家距金融服务所较远，立即用电话向金融服务所声明挂失．金融服务所工作人员王某某接挂失电话后，经查，原告帐户办的存款分文未动．郝大海在电话中对王某某说：“看着点，别叫人冒支．”王某某答应可以．并告诉郝大海第二天到金融服务所来．之后，王某某没有按照银行的有关规定，为郝大海办理挂失手续，也未向所内其他人员交代此事．第二天下午，郝大海到金融服务所办理正式挂失手续时，得知存折内的6000元存款已被他人冒领．郝大海要求被告赔偿被他人冒领的存款，被告拒付。为此，原告向法院起诉，要求被告赔偿由此造成的经济损失。被告工商银行承认原告所诉事实，但拒绝承担赔偿责任．人民法院运用自认规则，认定事实存在，经调解达成协议，由被告向原告赔偿相应的经济损失． 根据上述案情请说明何为民事诉讼中的自认？效力如何？本案如何运用自认认定案件事实？

阅读理解。

     Nothing says love like a dozen long-stemmed roses on Valentine's Day. More than a million roses will

be sold during this festival for lovers, the biggest day of the year for the nation's rose industry. It's going

to remain the most popular flower because love never goes out of style.

     Yes, a rose is a rose. But selling them is no longer a beautiful experience for traditional flower shops.

Supermarkets now offer convenience to the busy and discount rose shops help those hopelessly in love

save money. Roses Only is a good example of a discount rose retailer that was transformed from a

traditional shop to answer the challenge in the 90's.

     Inside this store on Sixth Avenue near 40th Street, contemporary white furniture and wall-to-wall

mirrors give it an expensive look. Customers move about freely among the counters, looking eagerly at the

roses in more than 50 colors from shelf to shelf. Some customers say it's the high quality of the roses that

attracts them there. "I spent ＄20 but the flowers looked like I paid 60 or 70 dollars," says one customer.

     Studies show more people are buying roses in ones, twos and threes these days. In fact, more than half

of all roses are sold in bunches of fewer than a dozen. But Roses Only's low prices encourage people to

spend. Even on Valentine's Day, when the price of a dozen roses and delivery can soar as high as $150, 12

of Roses Only's most expensive flowers sell for just ＄35. The company's key to success is to hold prices

down by controlling every link in the rose chain. It grows its own roses in the sunshine of the Andes

Mountains. In addition, the company also sells other items such as balloons and stuffed animals.

     While discount rose retailers are witnessing their business bloom, U.S. rose growers aren't able to

compete with the fierce foreign competition. More than 57% of roses sold in the USA are grown in other

countries. The biggest foreign producers are Colombia and Ecuador, which accounted for almost 90% of

the total imported last year. The trend has hurt domestic rose growers such as Johnson Flowers of California,

considered to be this country's leading producer.

     Now, instead of fighting overseas rivals, the Johnsons are trying to work with them. "We have a few

big fighting overseas rivals, the Johnsons are trying to work with them. We may also widen our business

to include the service area and be a representative for overseas flower producers."

     As a result of severe competition, those in the rose business long for the good old days, whereas ordinary

people benefit from the low price.

1. What is the central theme of this text?

A. The US rose business is going from bad to worse in spite of the efforts made.

B. The rose will remain the most popular flower as love never goes out of date.

C. The rose business is trying to meet the challenges in the market to succeed.

D. The rose industry plays an important role in American economy.

2. How does Roses Only obtain success in the discount rose retailing field?

A. By setting up more chain stores across the country.

B. By selling roses in supermarkets.

C. By selling high quality roses at a low price.

D. By selling roses by the dozen.

3. Which of the following shows the structure of the passage? (① to ⑦represent paragraphs l to 7)

A.  B.  C.  D.

4. After reading the passage,we learn all of the following EXCEPT _____.

A. selling roses is no longer as easy for traditional flower shops as it was

B. almost 90% of roses sold in US are imported from Colombia and Ecuador

C. US rose growers are faced with intense foreign competition

D. the Johnsons are trying to co-operate with foreign competitors instead of fighting them

下列操作中，可以确保打开一个记不清用何种程序建立的文档的是（）。

A.用[开始]菜单中的[文档]命令打开

B.用建立该文档的程序打开

C.用[开始]菜单中的[搜索]命令找到该文档，然后双击它

D.用[开始]菜单中的[运行]命令运行它

通常情况下岩石越坚硬，需要的炮眼就越多。