When you export quiz content from Curve, it is formatted in a QTI .zip file.
Open Course Settings
In Course Navigation, click the Settings link.
Export Course Content
In the sidebar, click the Export Course Content button.
Choose Export Type
In the dropdown menu, select Quiz Export . Choose the Quizzes you want to export . By default, all quizzes are selected. Click the Create Export button .
Note: When you create an export, Curve will create an export archive  where you can download prior export files.
Depending on how much Quiz content you need to export, it may take a while. When the export is complete, click the Download link  to download the file and view the Quiz content. This makes it easier to view and share the Quiz content. Remember, it will be in a QTI .zip file format, so you will need to extract the content to another file in order to view it.