以一定的初速度竖直上抛一物体，物体运动一段时间后又落回原处，若物体在空中运动的过

任务型阅读。

     Dragon (龙) Boat Festival is coming near, which is celebrated every year on May 5th in the lunar

calendar (农历). This festival was started 2 000 years ago with a number of stories explaining its origin

(来源). The best - known story is about one of Chiese greatest poets (诗人) named Qu Yuan who lost

his life in the river on the fifth day of the fifth lunar month. People commemorate (纪念) Qu Yuan through

dragon boat races, eating zongzi and several other activities. The dragon boat race is the most exciting part of the festival.

     Dragon Boat Festival is regarded as one of the traditional festivals throughout China.

同义句转换，每空一词。

1. Dragon Boat Festival is regarded as one of the traditional festrvals around China.

    Dragon Boat Festival is regarded as one of the traditional festivals _____ _____China.

根据短文内容简答问题。

2. What is the most exciting part of Dragon Boat Festival?

                                                                            .

A management information system （） the business managers the information that they need to make decisions. Early business computers were used for simple operations such （） tracking inventory, billing, sales, or payroll data, with little detail or structure. Over time. these computer applicationsbecame more complex, hardware storage capacities grew, and technologies improved for connecting previously （） applications. As more data was stored and linked, managers sought greater abstraction as well as greater detail with the aim of creating significant management reports from the raw, stored （） . Originally，the term "MIS" described applications providing managers with information about sales, inventories, and other data that would help in （） the enterprise. Over time, the term broadened to include：decision support systems，resource management and human resource management，enterprise resource planning(ERP), enterprise performance management(EPM), supply chain management(SCM)，customer relationship management(CRM)，project management and database retrieval applications

Originally，the term "MIS" described applications providing managers with information about sales, inventories, and other data that would help in （） the enterprise

A．setting up

B．founding

C．improving

D．managing

20世纪90年代初，邓 * * 头像再次出现在《时代》周刊封面上。《时代》周刊介绍到：“'航空母舰'在13年里转了第二圈。”以下对材料理解正确的是（  ）

A．他作出了“把工作重点转移到社会主义现代化建设上来”的战略决策

B．他系统提出了社会主义初级阶段的理论，规定了党在初级阶段的基本路线

C．他的南巡谈话，为创立社会主义市场经济体制理论提供了基础

D．他明确提出了“走自己的路，建设中国特色的社会主义”的道路

户外架空管道的防雷要求有( )。

A．户外架空金属管道，应设防雷电波侵入建筑物的接地。其中输送易燃易爆气体或液体的管道在进出建筑物处，不同爆炸危险环境的边界、管道分支处及直线段管道50～80m处应设防静电接地，每处接地电阻不大于30Ω(氧气和乙炔气体管道为10Ω)
B．户外架空氢气管道应每隔20～25m设防雷电感应接地，每处接地电阻不大于10Ω
C．上述管道架空平行敷设，当两管间净距小于100mm时，每隔20～30m应用金属线跨接，净距小于100mm的交叉管道也应用金属线跨接
D．防雷电感应接地和防静电接地宜共用接地装置，接地电阻应符合两种接地中较小值的要求，并可与防雷及电气设备接地装置相连通

现场放置氧气瓶、乙炔安全规定？