2014年5月1日星期四

070-561-Csharp testantworten, 070-461 zertifizierungsantworten, 70-506 zertifizierungsfragen

Das Zertifikat von Microsoft 070-561-Csharp kann Ihnen sehr helfen. Mit dem Zertifikat können Sie befördert werden. Und Ihre Lebensverhältnisse werden sich sicher verbessern. Das Zertifikat bedeutet für Sie einen großen Reichtum. Die Microsoft 070-561-Csharp (TS:MS.NET Framework 3.5,ADO.NET Application Development) Zertifizierungsprüfung ist ein Test für das Niveau der IT-Fachleute. Die Prüfungsmaterialien zur Microsoft 070-561-Csharp Zertifizierungsprüfung sind die besten und umfassendesten. Nun steht Pass4Test Ihnen die besten und optimalen Prüfungsmaterialien zur 070-561-Csharp Zertifizierungsprüfung, die Prüfungsfragen und Antworten enthalten.

Microsoft 070-461 Examenskandidaten alle wissen, das Microsoft 070-461-Prüfung ist nicht leicht zu bestehen. Aber es ist auch der einzige Weg zum Erfolg, so dass sie die Prüfung wählen müssen. Um Ihre Berufsaussichten zu verbessern, müssen Sie diese Zertifizierungsprüfung bestehen. Die Prüfungsfragen und Antworten von Pass4Test enthalten verschiedene gezielte und breite Wissensgebiete. Es gibt keine anderen Bücher oder Materialien, die ihr überlegen ist. Pass4test wird sicher Ihnen helfen, diese Prüfung zu bestehen. Die Untersuchung zeigt sich, dass die Erfolgsquote von Pass4test 100% beträgt. Pass4Test ist die einzige Methode, die Ihen zum Bestehen der Prüfung hilft. Wenn Sie Pass4Test wählen, wartet eine schöne Zukunft auf Sie da.

Mit der Ankunft der Flut des Informationszeitalters im 21. Jahrhundert müssen die Menschen ihre Kenntnisse verbessern, um sich dem Zeitalter anzupassen. Aber das ist noch nicht genügend. In der IT-Branche ist Microsoft 70-506 Zertifizierungsprüfung ganz notwendig.Aber diese Prüfung ganz schwierig. Sie können auch internationale Anerkennung und Akzeptanz erhalten, eine glänzende Zukunft haben und ein hohes Gehalt beziehen. Pass4Test verfügt über die weltweit zuverlässigsten IT-Schulungsmaterialien und mit ihm können Sie Ihre wunderbare Pläne realisieren. We garantieren Ihnen 100%, die Prüfung zu bestehen. Bewerber, die an der Microsoft 70-506 Zertifizierungsprüfung teilnehmen, warum zögern Sie noch. Schnell, bitte!

Wie weit ist der Anstand zwischen Worten und Taten? Es hängt von der Person ab. Wenn man einen starken Willrn haben, ist Erfolg ganz leicht zu erlangen. Wenn Sie Microsoft 070-561-Csharp Zertifizierungsprüfung wählen, sollen Sie die Prüfung bestehen. Die Schulungsunterlagen zur Microsoft 070-561-Csharp-Prüfung von Pass4Test ist die optimale Wahl, Ihnen zu helfen, die Prüfung zu bestehen. Die Qualität der Schulungsunterlagen von Pass4Test ist sehr gut. Wenn Sie die Microsoft 070-561-Csharp Zertifizierungsprüfung bestehen wollen, wählen Sie doch Schulungsunterlagen von Pass4Test.

070-561-CsharpExam Code: 070-561-Csharp
Prüfungsname: TS:MS.NET Framework 3.5,ADO.NET Application Development
Aktulisiert: 2014-05-01, 070-561-Csharp Prüfungsfragen
Nummer: 100 Q&As

070-561-Csharp testantworten : Hier Klicken

 
070-461Exam Code: 070-461
Prüfungsname: Querying Microsoft SQL Server 2012
Aktulisiert: 2014-05-01, 070-461 Testfagen
Nummer: 98 Q&As

070-461 Zertifizierungsfragen : Hier Klicken

 
70-506Exam Code: 70-506
Prüfungsname: Microsoft Silverlight 4, Development
Aktulisiert: 2014-05-01, 70-506 Schulungsunterlagen
Nummer: 153 Q&As

70-506 PDF Testsoftware : Hier Klicken

 

Mit den Schulungsunterlagen zur Microsoft 70-506 Zertifizierungsprüfung von Pass4Test können Sie die Microsoft 70-506 Zertifizierungsprüfung ganz einfach bestehen. Die von uns entworfenen Schulungsinstrumente werden Ihnen helfen , die Prüfung nur einmal zu bestehen. Sie können nur Teil der Fragen und Antworten zur Microsoft 70-506 Zertifizierungsprüfung in Pass4Test als Probe kostenlos herunterladen und die Prüfung ganz einfach bestehen. Wenn Sie noch zögern, benutzen Sie doch unsere Probeversion. Sie werden sich über ihre gute Wirkung wundern. Schicken Sie doch Pass4Test in den Warenkorb. Wenn Sie es verpassen, würden Sie lebenslang bereuen.

Pass4Test bieten Ihnen eine klare und ausgezeichnete Wahl und reduzieren Sie Ihre Sorgen. Möchten Sie frühen Erfolg? Möchten Sie schnell Microsoft 070-561-Csharp Zertifikat? Beeilen Sie sich Pass4Test in Ihren Einkaufswagen hinzuzufügen. Pass4Test gibt Ihnen eine gute Anleitung, um sicherzustellen, dass Sie die Prüfung bestehen können. Mit Pass4Test können Sie ganz schnell das gewünschte Zertifikat bekommen.

70-506 prüfungsfragen Demo kostenlos downloden: http://www.pass4test.de/70-506.html

NO.1 You are developing a Silverlight 4 application.
The application defines the following XAML fragment. (Line numbers are included for reference only.)
01 <ComboBox>
02 <ComboBoxItem Content="Item 1" />
03 <ComboBoxItem Content="Item 2" />
04 <ComboBoxItem Content="Item 3" />
05 </ComboBox>
The codebehind file contains the following code segment. (Line numbers are included for reference only.)
06 void PrintText(object sender, SelectionChangedEventArgs args){
07
08 MessageBox.Show( "You selected " + cbi.Content.ToString() + ".")
09 }
You need to ensure that when the user selects an item in a ComboBox control, the content of the item is
displayed.
What should you do?
A. Replace the following XAML fragment at line 01.
<ComboBox SelectionChanged="PrintText">
Add the following code segment at line 07.
ComboBoxItem cbi = ((sender as ComboBox).SelectedItem as ComboBoxItem)
B. Replace the following XAML fragment at line 01.
<ComboBox SelectionChanged="PrintText">
Add the following code segment at line 07.
ComboBoxItem cbi = ((sender as ComboBox).SelectedIndex as ComboBoxItem)
C. Replace the following XAML fragment at line 01.
<ComboBox DropDownClosed="PrintText">
Add the following code segment at line 07.
ComboBoxItem cbi = ((sender as ComboBox).SelectedItem as ComboBoxItem)
D. Replace the following XAML fragment at line 01.
<ComboBox DropDownClosed="PrintText">
Add the following code segment at line 07.
ComboBoxItem cbi = ((sender as ComboBox).SelectedIndex as ComboBoxItem)
Answer: A

Microsoft quizfragen und antworten   70-506 echte fragen   70-506 Prüfungsfrage   70-506

NO.2 }
You attempt to run the application. You receive the following error message:
"Invalid crossthread access."
You need to ensure that worker executes successfully.
What should you do?
A. Replace line 11 with the following code segment.
var b = (bool )checkBox.GetValue(CheckBox.IsCheckedProperty)
bool isChecked = b.HasValue && b.Value
B. Replace line 11 with the following code segment.
bool isChecked = false
Dispatcher.BeginInvoke(() =>
{
isChecked = checkBox.IsChecked.HasValue && checkBox.IsChecked.Value
})
C. Replace line 18 with the following code segment.
statusTextBlock.SetValue(TextBlock.TextProperty, e.ProgressPercentage + "%")
D. Replace line 18 with the following code segment.
Dispatcher.BeginInvoke(() =>
{
statusTextBlock.Text = e.ProgressPercentage + "%"
})
Answer: B

Microsoft   70-506   70-506 Prüfungsfragen
13.You are developing an application by using Silverlight 4 and Microsoft.NET Framework 4.
You add the following code segment. (Line numbers are included for reference only.)
01 public class MyControl : Control
02 {
03
04 public string Title
05 {
06 get { return (string)GetValue(TitleProperty)
}
07 set { SetValue(TitleProperty, value)
}
08 }
09 }
You need to create a dependency property named TitleProperty that allows developers to set the Title.
You also need to ensure that the default value of the TitleProperty dependency property is set to Untitled.
Which code segment you add at line 03?
A. public static readonly DependencyProperty TitleProperty =
DependencyProperty.Register("Untitled",
typeof(string),
typeof(MyControl),
null)
B. public static readonly DependencyProperty TitleProperty =
DependencyProperty.Register("Untitled",
typeof(string),
typeof(MyControl),
new PropertyMetadata("Title"))
C. public static readonly DependencyProperty TitleProperty =
DependencyProperty.Register("Title",
typeof(string),
typeof(MyControl),
new PropertyMetadata("Untitled"))
D. public static readonly DependencyProperty TitleProperty =
DependencyProperty.Register("Title",
typeof(string),
typeof(MyControl),
new PropertyMetadata(new PropertyChangedCallback((depObj, args) =>
{
depObj.SetValue(MyControl.TitleProperty, "Untitled")
})))
Answer: C

Microsoft prüfungsfragen   70-506 antworten   70-506 prüfung   70-506 Prüfungsfrage
14.You are developing an application by using Silverlight 4 and Microsoft.NET Framework 4.
You create a control named MyControl in the application. Each instance of the control contains a list of
FrameworkElement objects.
You add the following code segment. (Line numbers are included for reference only.)
01 public class MyControl : Control
02 {
03
04 public List<FrameworkElement> ChildElements
05 {
06 get {
07 return List<FrameworkElement>)GetValue(MyControl.ChildElementsProperty)
08 }
09 }
10
11 public MyControl()
12 {
13
14 }
15 static MyControl()
16 {
17
18 }
19 }
You need to create the ChildElementsProperty dependency property. You also need to initialize the
property by using an empty list of FrameworkElement objects.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Add the following code segment at line 03.
public static readonly DependencyProperty ChildElementsProperty =
DependencyProperty.Register("ChildElements", typeof(List<FrameworkElement>), typeof(MyControl),
new PropertyMetadata(new List<FrameworkElement>()))
B. Add the following code segment at line 03.
public static readonly DependencyProperty ChildElementsProperty =
DependencyProperty.Register("ChildElements", typeof(List<FrameworkElement>), typeof(MyControl),
new PropertyMetadata(null))
C. Add the following code segment at line 13.
SetValue(MyControl.ChildElementsProperty, new List<FrameworkElement>())
D. Add the following code segment at line 17.
ChildElementsProperty =
DependencyProperty.Register("ChildElements", typeof(List<FrameworkElement>), typeof(MyControl),
new PropertyMetadata(new List<FrameworkElement>()))
Answer: B, C

Microsoft prüfungsfrage   70-506 lernhilfe   70-506 Buch   70-506 tests
15.You are developing an application by using Silverlight 4 and Microsoft.NET Framework 4.
You add the following code segment. (Line numbers are included for reference only.)
01 var outerCanvas = new Canvas()
02 var innerCanvas = new Canvas()
03 innerCanvas.Width = 200
04 innerCanvas.Height = 200
05 outerCanvas.Children.Add(innerCanvas)
06
You need to set the distance between the left of the innerCanvas element and the left of the outerCanvas
element to 150 pixels.
Which code segment should you add at line 06?
A. outerCanvas.Margin = new Thickness(0.0, 150.0, 0.0, 0.0)
B. innerCanvas.Margin = new Thickness(0.0, 150.0, 0.0, 0.0)
C. outerCanvas.SetValue(Canvas.LeftProperty, 150.0)
D. innerCanvas.SetValue(Canvas.LeftProperty, 150.0)
Answer: D

Microsoft testking   70-506 Antworten   70-506 PDF Testsoftware   70-506 prüfungsunterlagen
16.You are developing a Silverlight 4 application. The application contains a Product class that has a
public Boolean property named IsAvailable.
You need to create a value converter that binds data to the Visibility property of a Button control.
Which code segment should you use?
A. public class BoolToVisibilityConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo
culture)
{
bool result = System.Convert.ToBoolean(parameter)
return result Visibility.Visible : Visibility.Collapsed
}
public object ConvertBack(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
throw new NotImplementedException()
}
}
B. public class BoolToVisibilityConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo
culture)
{
bool result = System.Convert.ToBoolean(value)
return result Visibility.Visible : Visibility.Collapsed
}
public object ConvertBack(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
throw new NotImplementedException()
}
}
C. public class BoolToVisibilityConverter : PropertyPathConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo
culture)
{
return this.ConvertTo(value, typeof(Visibility))
}
public object ConvertBack(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
throw new NotImplementedException()
}
}
D. public class BoolToVisibilityConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo
culture)
{
bool result = System.Convert.ToBoolean(value)
return result Visibility. Visible : Visibility. Collapsed
}
public object ConvertBack(object value, Type targetType, object parameter,
System.Globalization.CultureInfo culture)
{
throw new NotImplementedException()
}
}
Answer: B

Microsoft   70-506   70-506 Prüfungsfrage
17.You are developing a Silverlight 4 application. The application contains a Product class that has a
public string property named Name.
You create a TextBox control by using the following XAML fragment.
<TextBox Text="{Binding Name, ValidatesOnDataErrors=True}" />
You need to ensure that validation errors are reported to the user interface. You also need to ensure that
a validation error will occur when the TextBox control is empty.
Which code segment should you use?
A. public class Product
{
[Required()]
public string Name { get
set
}
}
B. public class Product : IDataErrorInfo
{
public string Name { get
set
}
public string Error { get { return null
} }
public string this[string columnName]
{
get
{
if (columnName == "Name" && string.IsNullOrEmpty(Name))
{
throw new ValidationException("Name should not be empty!")
}
return string.Empty
}
}
}
C. public class Product : IDataErrorInfo
{
public string Name { get
set
}
public string Error { get { return null
} }
public string this[string columnName]
{
get
{
if (columnName == "Name" && string.IsNullOrEmpty(Name))
{
return "Name should not be empty!"
}
return string.Empty
}
}
}
D. public class Product
{
private string _name
public string Name
{
get { return _name
}
set
{
if (string.IsNullOrEmpty(value))
throw new ValidationException("Name should not be empty!")
_name = value
}
}
}
Answer: C

Microsoft   70-506 PDF Testsoftware   70-506   70-506 Prüfungsfragen   70-506 zertifizierungsfragen
18.You are developing a ticketing application by using Silverlight 4. You have a listbox named lstTickets
that contains a list of the tickets. The page contains a button that allows the user to print the tickets. The
PrintView UserControl binds to the type in lstTickets and is designed to fit a standard sheet of paper.
You add the following code segment to the button event handler. (Line numbers are included for
reference only.)
01 var doc = new PrintDocument()
02 var view = new PrintView()
03 doc.PrintPage += (s, args) =>
04 {
05 var ppc = doc.PrintedPageCount
06 if (ppc < lstTickets.Items.Count)
07 {
08 var data = lstTickets.Items[ppc]
09 view.DataContext = data
10 args.PageVisual = view
11
12
13 }
14 }
15 doc.Print("tickets")
You need to use the Silverlight printing API to print each ticket on its own page. You also need to ensure
that all tickets in the listbox are printed.
Which code segment should you insert at lines 11 and 12?
A. if (args.HasMorePages == false)
return
B. if (args.HasMorePages == true)
return
C. if (doc.PrintedPageCount < this.lstTickets.Items.Count 1)
args.HasMorePages = true
D. if (ppc == this.lstTickets.Items.Count 1)
doc.EndPrint += (o, p) => { return
}
Answer: C

Microsoft tests   70-506 Prüfungsfrage   70-506 prüfungen   70-506 dumps deutsch
19.You are developing an outofbrowser
application by using Silverlight 4.
The main page of the application contains the following code segment.
public MainPage()
{
InitializeComponent()
NetworkChange.NetworkAddressChanged += (s, e) => CheckNetworkStatusAndRaiseToast()
CheckNetworkStatusAndRaiseToast()
}
You need to ensure that the application will raise a toast notification when network connectivity changes.
Which two actions should you perform in the CheckNetworkStatusAndRaiseToast method? (Each correct
answer presents part of the solution. Choose two.)
A. Verify that App.Current.IsRunningOutOfBrowser is true.
B. Verify that App.Current.IsRunningOutOfBrowser is false.
C. Verify that App.Current.HasElevatedPermissions is true.
D. Verify that App.Current.HasElevatedPermissions is false.
E. Examine NetworkInterface.GetIsNetworkAvailable().
F. Call App.Current.CheckAndDownloadUpdateAsync() in a try/catch block.
Answer: A, E

Microsoft   70-506 prüfung   70-506   70-506 online prüfungen   70-506

NO.3 You are developing a Silverlight 4 application. You define an Invoice object according to the following
code segment.
public class Invoice
{
public int InvoiceId { get
set
}
public double Amount { get
set
}
public Supplier Supplier { get
set
}
public DateTime InvoiceDate { get
set
}
public DateTime PayDate { get
set
}
public string InvoiceDescription { get
set
}
}
You need to display a list of invoices that have the following properties displayed on each line: InvoiceId,
Amount, and InvoiceDate.
Which XAML fragment should you use?
A. <ListBox x:Name="InvoiceListBox">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=InvoiceId}" />
<TextBlock Text="{Binding Path=Amount}" />
<TextBlock Text="{Binding Path=InvoiceDate}" />
</StackPanel>
</ListBox>
B. <ListBox x:Name="InvoiceListBox">
<StackPanel Orientation="Horizontal">
<ListBoxItem>
<TextBlock Text="{Binding Path=InvoiceId}" />
</ListBoxItem>
<ListBoxItem>
<TextBlock Text="{Binding Path=Amount}" />
</ListBoxItem>
<ListBoxItem>
<TextBlock Text="{Binding Path=InvoiceDate}" />
</ListBoxItem>
</StackPanel>
</ListBox>
C. <ListBox x:Name="InvoiceListBox">
<ListBox.Items>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=InvoiceId}" />
<TextBlock Text="{Binding Path=Amount}" />
<TextBlock Text="{Binding Path=InvoiceDate}" />
</StackPanel>
</ItemsPanelTemplate>
</ListBox.Items>
</ListBox>
D. <ListBox x:Name="InvoiceListBox">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=InvoiceId}" />
<TextBlock Text="{Binding Path=Amount}" />
<TextBlock Text="{Binding Path=InvoiceDate}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Answer: D

Microsoft prüfungsfrage   70-506 fragen und antworten   70-506 prüfungsunterlagen   70-506 Zertifizierungsfragen

NO.4 }

NO.5 }
You need to ensure that worker can be properly canceled.
Which code segment should you use to replace line 11?
A. var cancel = (sender as BackgroundWorker).CancellationPending
if(cancel) {
(sender as BackgroundWorker).CancelAsync()
break
}
else {
InvokeLongRunningProcessStep()
}
B. var cancel = (sender as BackgroundWorker).CancellationPending
if(cancel) {
e.Cancel = true
break
}
else {
InvokeLongRunningProcessStep()
}
C. var cancel = e.Cancel
if(cancel) {
(sender as BackgroundWorker).CancelAsync()
break
}
else {
InvokeLongRunningProcessStep()
}
D. var cancel = e.Cancel
if(cancel) {
e.Cancel = true
break
}
else {
InvokeLongRunningProcessStep()
}
Answer: B

Microsoft zertifizierung   70-506   70-506 Zertifizierungsantworten   70-506   70-506 exam fragen   70-506 Zertifizierungsantworten
12.You are developing an application by using Silverlight 4 and Microsoft.NET Framework 4.
You add a BackgroundWorker object named worker to the application. You also add a CheckBox control
named checkBox and a TextBlock control named statusTextBlock.
You add the following code segment. (Line numbers are included for reference only.)
01 public MainPage()
02 {
03 InitializeComponent()
04 worker.WorkerReportsProgress = true
05 worker.DoWork += new DoWorkEventHandler(worker_DoWork)
06 worker.ProgressChanged += new ProgressChangedEventHandler(worker_ProgressChanged)
07 }
08 private void worker_DoWork(object sender, DoWorkEventArgs e)
09 {
10 for (int i = 0
i < 100
i++) {
11 bool isChecked = checkBox.IsChecked.HasValue && checkBox.IsChecked.Value
12 ExecuteLongRunningProcessStep(isChecked)
13 worker.ReportProgress(i)

NO.6 }

NO.7 You have a Silverlight 4 application that uses isolated storage. You create an application that has a 5
MB file that must be saved to isolated storage.
Currently, the application has not allocated enough isolated storage to save the file.
You need to ensure that the application prompts the user to increase the isolated storage allocation. You
also need to ensure that only the minimum amount of space needed to save the 5 MB file is requested.
Which code segment should you use?
A. using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var neededSpace = 5242880
if (store.IncreaseQuotaTo(neededSpace))
{
...
}
}
B. using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var neededSpace = 5242880
if (store.IncreaseQuotaTo(store.Quota + neededSpace))
{
...
}
}
C. using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var neededSpace = 5242880
if (store.IncreaseQuotaTo(
store.AvailableFreeSpace + neededSpace
))
{
...
}
}
D. using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var neededSpace = 5242880
if (store.IncreaseQuotaTo(
store.UsedSize + neededSpace
))
{
...
}
}
Answer: D

Microsoft zertifizierungsantworten   70-506   70-506 Buch   70-506 Fragenkatalog

NO.8 You are developing a Silverlight 4 application.
The application defines the following three event handlers. (Line numbers are included for reference
only.)
01 private void HandleCheck(object sender, RoutedEventArgs e)
02 {
03 MessageBox.Show("Checked")
04 }
05
06 private void HandleUnchecked(object sender, RoutedEventArgs e)
07 {
08 MessageBox.Show("Unchecked")
09 }
10
11 private void HandleThirdState(object sender, RoutedEventArgs e)
12 {
13 MessageBox.Show("Indeterminate")
14 }
You need to allow a check box that can be selected, cleared, or set to Indeterminate. You also need to
ensure that the event handlers are invoked when the user changes the state of the control.
Which XAML fragment should you use?
A. <CheckBox x:Name="cb2" Content="Three State CheckBox"
IsChecked="True" Checked="HandleCheck"
Indeterminate="HandleUnchecked" Unchecked="HandleUnchecked" />
B. <CheckBox x:Name="cb2" Content="Three State CheckBox"
IsThreeState="True" Checked="HandleCheck"
Indeterminate="HandleThirdState" Unchecked="HandleUnchecked" />
C. <CheckBox x:Name="cb2" Content="Three State CheckBox"
IsHitTestVisible="True" Checked="HandleCheck"
Indeterminate="HandleThirdState" Unchecked="HandleUnchecked" />
D. <CheckBox x:Name="cb2" Content="Three State CheckBox"
IsEnabled="True" Checked="HandleCheck"
Indeterminate="HandleUnchecked" Unchecked="HandleUnchecked" />
Answer: B

Microsoft originale fragen   70-506   70-506   70-506 Examsfragen   70-506 fragen beantworten   70-506 Zertifizierungsfragen

没有评论:

发表评论