You can view a single file in Smart Review in Single View or you can view two files at a time in Spread View.
Note: You cannot view rotated files in Spread View.
View pages in any of the following ways:
To
Do this
View a single file
Click Single View. (This is the default mode.)
View two files at a time
Click Spread View.
Change the file that is displayed in Single View mode
Perform one of the following actions:
In the Files pane, click the name or thumbnail of the file that you want to display.
Click Previous Page or Next Page.
In the pages box , type the number of the file that you want to display.
Change the files that are displayed in Spread View mode
Perform one of the following actions:
Click Previous Page to display the
files (in Adobe Reader Spread mode) before the ones currently displayed, or click Next Page to display the
files after the ones currently displayed.
In the Files pane, right-click (Ctrl+click on a Mac computer) the file that you want to Assign to Left or Right View in your spread view.
. (This is the default mode.)
.
or 
.
, type the number of the file that you want to display.