问题 单项选择题

某商品流通企业拟定了甲、乙、丙、丁四种经营方案,市场需求可能出现较高、中等、较低三种情况,其概率分布及各种方案在不同需求状态下的损益值如下表。总经理找来主管销售和财务的副总经理深入研究市场状况,要求他们结合各自经验来选择本企业经营方案。请回答以下问题:
自然状态损益值(万元)
需求量较高491830
需求量中等879-5
需求量较低254-8

总经理听了两位副总经理的决策意见,他认为出现三种状态的概率分别是0.35、0.45、0.20,所以他选择( )。

A.甲

B.乙

C.丙

D.丁

答案

参考答案:C

解析: 甲方案的期望值=4×0.35+8×0.45+ 2×0.20=5.4,乙、丙、丁方案的期望值分别 是7.3、11.15、6.65。丙方案的期望值最大, 所以应选择丙方案。

写作题

阅读下面的短文,然后按照要求写一篇150词左右的英语短文。

Beijing, Oct. 2, 2008 --- Tourist destinations around the country had at least 4.05 million visitors, up 33.4 percent year-on-year, during the first four days of the week-long national holiday.

The tourism revenue(财政收入) jumped 37.5 percent year-on-year.

This year’s “golden week” National Day holiday runs from Sept. 29 to Oct.5. In previous years, the seven-day holiday kicked off on Oct. 1.

Beijing had a visitor increase of more than 60 percent, with many tourists drawn to see the Olympic venues(场所).

About 920,000 people, up 62 percent year-on-year, visited 21 major tourist sites in Beijing, according to figures released by the office.

The must-see Forbidden City welcomed 120,000 visitors, up 140 percent.

Shanghai saw a 52.2-percent rise in the number of tourists at more than 70 sites.

In Sichuan province, about 107,400 people, an increase of 360 percent from last year, visited the ancient town of Huanglongxi near Chengdu.

Chinese trains carried more than 5.4 million passengers on Wednesday alone, an increase of almost 13 percent. About 557, 300 people traveled by air and 53.2 million people hit the roads on the same day.

[写作内容]

从2008年起,国家调整了假日设置,五一黄金周被取消,增加了传统节日的休假,对此人们评价不一。在今年国庆前,网上流传一些专家和机构的说法,国家将会在近期取消“十一”黄金周,又引起了各种反响。请你对此现象发表意见。

内容要点包括:

以约30个词概括新闻报道;

用约120个词谈谈你的观点,内容包括:

支持者意见:虽然缩短了“五一”长假,但增加了三个传统节日,有利于提高传统文化意识,减轻了旅游地的接待压力,增加了亲人团聚的机会......

反对者意见:会导致长假期间的交通更加拥挤,减少了远方的人员回家探亲的机会......

你的观点。

[写作要求]

1.你可以使用实例或其它论述方法支持你的观点,也可以参照阅读材料的内容但不得直接引用原文中的句子;

2.文中不能出现真实姓名和学校名称;

[评分标准]  概括准确,语言规范,内容合适,篇章连贯。

单项选择题