Continuous scrolling should be the default behavior.
In some rare scenario one might want page scrolling to jump to next page like it does by default, but it is an annoyance in the most common context of reading a text document. While there is a way to change this setting, general people cannot be expected to understand that this is done by changing "Page Layout" to "Single Page Continuous" under "Page Display" from "Preferences" under "Edit" menu. Please beef up your UX team!
You can always set the continous scolling as your default view.
Here s how you can do this :
1) Open preferences dialog (Ctrl+K) and go to Page Display tab
2) under “Default Layout and Zoom” select the Page layout as Single page Continous and saveit
Let me know if this helps ?