如何在不影响课程进度的前提下，省时而又有效地开展培养同学们的口语能力的活动，我有以下几点体会： ①Say something about your bedroon/school… 在学完一至两个单元后，可抽出一节课专门让同学们谈一 谈自己的卧室、学校或教室等等，这一口语活动在初一第一学期就可以做。为了让更多的学生都能参加，在此 之前可先复习一下小学学过的there be 句型以及“介词短语＋be＋名词”结构和“介词短语＋you can see… ”结构。 这样做的好处是能有效让同学们根据这些句型轻松自然地描述出大脑里的图画。 ②Summary based on a dialogue 这一活动在初二就可以做。在这之前不妨先概括一下如下的句型结构： want/ask/tell sb (not) to dosth; want to do sth; ask if sb would like to do sth 以及一些简单句。 ③Text retelling 尽量用自己的语言口头改编、 复述较长的课文。在开展这一活动之前，允许同学们头一 天进行适当准备。不要限制同学们一定不要写提纲，甚至允许事先写出来。因为口头表达与书面表达是密切相联 的。只要同学们口头复述时不看书面提纲或内容即可。为了让全体同学有一个正确的标准，教师最好口头作一个 示范，让同学们有效地模仿。模仿在语言学习的初级阶段是相当重要的、不可缺少的步骤。 ④Make sentences 在平时的课堂教学中，当我们在学习一个新的词组和句型时，在给出典型的例句后， 应多多鼓励同学造句。同学们只要将例句看懂了都会非常乐意争先恐后地造句。有的句子甚至出乎意料的精彩 。这样做，不仅使同学们很轻松有效地学会了新词组、新句型，而且还为口语能力的形成打下了扎实的基础。 ⑤Debate/Argument 老师们可以根据学生学习的内容和实际水平，适当地选一个topic，让同学们展开争论。 如：Is it good or bad toplay video games in spare time? 还有在初二下学期学习情态动词can， ma y，must，can't时，就可给出一个model，让同学们模仿。如：给出一个实物让对方说出是什么： A What do you think it may be， B I think it may be an C It can't be an I think it must be a D How can it be a banana? A banana is long but it It must be an E It can't be an Anyone with eyes can see it isa…这样在模仿争论的同时，不知不觉中 掌握了情态动词的用法，从而也提高了同学们的口语表达能力。 ⑥Describe sb or sth you like best 随着一、二年级的知识积累，我们可以适当地让同学们在一节课的 前十分钟或后十分钟描述一下他（她）最喜欢的人或物。 以上只是我的个人观点，希望这些观点能让个同学们的口语有所提高。最后，祝住同学们都能学会英语，都能学懂英语，都能学好英语！
What Is Grid Storage? Based on current and proposed products， it appears that a grid storage system should include the following: Modular storage arrays: These systems are connected across a storage network using serial ATA The systems can be block-oriented storage arrays or network-attached storage gateways and Common virtualization layer: Storage must be organized as a single logical pool of resources available to Data redundancy and availability: Multiple copies of data should exist across nodes in the grid， creating redundant data access and availability in case of a component Common management: A single level of management across all nodes should cover the areas of data security， mobility and migration， capacity on demand， and Simplified platform/management architecture: Because common management is so important， the tasks involved in administration should be organized in modular fashion， allowing the autodiscovery of new nodes in the grid and automating volume and file Three Basic Benefits Applying grid topology to a storage network provides several benefits， including the following: R A well-designed grid network is extremely Rather than providing just two paths between any two nodes， the grid offers multiple paths between each storage This makes it easy to service and replace components in case of failure， with minimal impact on system availability or P The same factors that lead to reliability also can improve Not requiring a centralized switch with many ports eliminates a potential performance bottleneck， and applying load-balancing techniques to the multiple paths available offers consistent performance for the entire S It’s easy to expand a grid network using inexpensive switches with low port counts to accommodate additional servers for increased performance， bandwidth and In essence， grid storage is a way to scale out rather than up， using relatively inexpensive storage building
VB to create long time timer object Pick to: in this paper， the Timer control in VB program used to create a long time Timer object， and the compiled into ActiveX DLL components， using the code reusability， in other Keywords: Vb timer object VB system provides the intrinsic Timer control， by giving the Timer Interval attribute to set the Timer control of different values， can control the time Interval Timer runs， but this attribute is a double byte an integer value， only is set to 65535， namely， only about one minute 65535 milliseconds， a little more time in a long time， when needed， this control is In this paper， a Timer control with long time to create the Timer object， and compiled into ActiveX DLL components， calling for other applications， can achieve maximum utilization of code The following are the ultra-long timer， programmable design process of the object reference for 1 programming Start a new VB， engineering project， ActiveX DLL named NewTimer Class1， module name LongTimer Add a form in engineering， in the form Form1 joined a Timer Timer control T Open LongTimer module， especially robust food Ge sash � naaman Mao? Br > Option Explicit Public Event Tick () 'declaration events Nz As Integer programing Programing Integer As cs M_Form As Form1 programing M_Timer WithEvents programing Timer 'declare objects such As variable 'return Enable attribute values Succeedas Enabled (� Public Boolean As) M_Timer = E Enabled Succeedas End 'setting Enable attribute values Public ByVal (vNewValue succeedas Enabled < Boolean ankylosing spondylitis (As)， M_Timer E VNewValue = Succeedas End 'Interval attribute value returns Public Interval (� succeedas) As mutually Interval = m_T Interval Succeedas End 'Interval attribute value set Public ByVal Interval (< succeedas vNewValue As mutually) Cs = 0 Nz = vNewValue / 65536 + 1 M_Timer I VNewValue = / nz Succeedas End "Class initialization events Sub programing CLASS_Initialize () Set m_Form = New Form1 M_Form Load Set m_Timer = m_F Timer1 Sub End "Such termination Sub programing CLASS_Terminate () M_Form Unload Set m_Timer = which Sub End "Tick produce Sub programing m_Timer_Timer () Cs = cs + 1 If cs > = nz Then RaiseEvent Tick Cs = 0 End If Sub End Form1 form only for the carrier， not Timer1 timer for 2 test NewT DLL To test， the DLL ActiveX parts with standard EXE， can be divided into operation or the single In the written code after all， users are suggested to use the shortcut Ctrl + compiler implementation， F5 NewTimer program that checks grammatical Also can build a test engineering and NewTimer links for testing， NewTimer module provided by each attribute and events， add the test code to test their properties and Press F8， into one single step， look for NewTimer module statement 3 NewTimer DLL Complete test， eliminate all wrong， from "file (F) menu， select" generation NewT DLL (K) "the order， the compiler NewTimer generation， DLLS Compile successfully NewT After the DLL will automatically register Windows registry， 4 NewTimer DLL Quote ActiveX DLL components references to other objects， from "engineering (P) menu， select" references (N)， "open window， from references cited NewTimer selected object If it is the first time in NewTimer cited references， click on "tour form (B)" command button that will add to NewT DLL can quote the list box can be Call NewT DLL In an application to join the program code， and NewTimer DLL calls: Explicit Option LongTimer1 As LongTimer WithEvents Dim Sub programing LongTimer1_Tick () Locate 14， 20: Print "time to add processing procedure， " Sub End Sub programing Command1_Click () LongTimer1 Interval = "two minutes LongTimer1 E = True Sub End Sub programing Form_Load () Set LongTimer1 = New LongTimer Sub End References [2] the B0 Visual studio in Chinese Tsinghua university press， 1997 [3] Basic5 Visual Petroutsos Evangelos from approaches to Beijing: electronic industry press， 1997 VB中创建超长时间计时器对象 摘 要：本文介绍在VB程序中用Timer控件创建一个超长时间的计时器对象，将其编译成ActiveX DLL部件，利用代码的可重用性，在其它应用程序中调用。 关键词：Vb 计时器 对象 VB系统中提供了固有计时器Timer控件，通过给计时器控件的Interval属性设置不同的数值，就可以控制计时器运行的时间间隔，但该属性是一个双字节的整型变量，最大值只能设置为65535，即只有65535毫秒，约一分钟多一点，在需要长时间计时时，该控件就无能为力了。本文给出用Timer控件创建一个超长时间的计时器对象，并将其编译成ActiveX DLL部件，供其它应用程序调用，可实现最大限度地利用代码的可重用性。下面给出这个超长计时器对象的编程设计过程，供读者参考选用。 1．编写程序 启动VB，新建一个ActiveX DLL工程，将工程命名为NewTimer，将类模块名Class1改名为LongTimer。在工程中添加一个窗体Form1，在窗体上加入一个Timer计时器控件Timer1。打开LongTimer类模块，尤肴缦鲁绦虼�耄?br> Option Explicit Public Event Tick() '声明事件 Private nz As Integer Private cs As Integer Private m_Form As Form1 Private WithEvents m_Timer As Timer '声明对象类变量 '返回Enable属性值 Public Property Get Enabled() As Boolean Enabled = m_TEnabled End Property '设置Enable属性值 Public Property Let Enabled(ByVal vNewValue As Boolean) m_TEnabled = vNewValue End Property '返回Interval属性值 Public Property Get Interval() As Long Interval = m_TInterval End Property '设置Interval属性值 Public Property Let Interval(ByVal vNewValue As Long) cs = 0 nz = vNewValue / 65536 + 1 m_TInterval = vNewValue / nz End Property '类初始化事件 Private Sub CLASS_Initialize() Set m_Form = New Form1 Load m_Form Set m_Timer = m_FTimer1 End Sub '类终止事件 Private Sub CLASS_Terminate() Unload m_Form Set m_Timer = Nothing End Sub '产生Tick事件 Private Sub m_Timer_Timer() cs = cs + 1 If cs >= nz Then RaiseEvent Tick cs = 0 End If End Sub 窗体Form1只用来作计时器Timer1的载体，不用于显示。 2．测试NewTDLL 对ActiveX DLL部件进行测试，与标准的EXE程序一样，可分为单步运行或全运行。在写完所有程序代码后，建议用户先用Ctrl+F5进行全编译执行，发现检查NewTimer程序的语法错误。也可建立一个测试工程与NewTimer链接进行测试，针对由NewTimer类模块提供的每个属性和事件，添加测试代码来测试它们的属性和方法。按F8，进入单步运行状态，逐个语句察看对NewTimer类模块的调用情况。 3．编译NewTDLL 完成测试，排除所有错误后，从“文件（F）”菜单中选择“生成NewTdll（K)”命令，编译生成NewTdll文件。编译成功后NewTdll文件将自动注册到Windows注册表中， 4．引用NewTDLL 引用ActiveX DLL部件同引用其他对象一样，从“工程（P）”菜单中选择“引用（N）”命令，打开引用窗口，从引用列表中选中NewTimer对象。如果是第一次引用NewTimer，则在引用窗体上单击“游览（B）”命令按钮，将NewTDLL文件添加到可引用列表框中方可使用。 5．调用NewTDLL 在应用程序中加入下述程序代码，实现参NewTdll的调用： Option Explicit Dim WithEvents LongTimer1 As LongTimer Private Sub LongTimer1_Tick() Print "时间到，此处添加处理程序" End Sub Private Sub Command1_Click() LongTInterval = 12000 ‘两分钟 LongTEnabled = True End Sub Private Sub Form_Load() Set LongTimer1 = New LongTimer End Sub 参考文献 [2]东箭工作室Visual B0中文版程序设计清华大学出版社，1997 [3]Evangelos P Visual Basic5从入门到精通北京：电子工业出版社，1997
