Itamar Tzadok

Yes, it is possible but not straightforward. Assuming your AICC compliant LMS supports HACP, you can link to external AICC content. That's the easy part. The problem is that  the Moodle quiz is not designed to support AICC, so you need a sort of adapter that talks the AICC talk and can listen to the quiz and communicate with the LMS as required. That's not too difficult.

The other challenge, if you want the user to be signed on and granted access to the Moodle course and quiz on launch, is SSO. The adapter will have to take care of that. One (proven) approach is to build on Moodle's ability to be an LTI provider (requires the local_ltiprovider plugin or equivalent) and let the adapter translate the AICC launch request to an LTI launch request where the target quiz is set as an LTI tool.

I know that's very brief but hope it helps nonetheless.

Here is a cloze editor I wrote several years ago: http://substantialmethods.com/subject/view.php?id=13&section=2. You can generate the questions with either short answer or multple choice. You can define sets of words to be used. In the multiple choice type the set constitutes for each replacement one correct answer and a few distractors. Fairly basic but should be effective.

In the Dataform the ratings are provided by a designated field ratingmdl. So to use ratings in an entry you need to add an instance of the field (the name of this field must be all lower case). You select the scale in the field instance settings. Once you have the field, the list of entry patterns in the dropdown next to the entry template area in the view will show you a selection of patterns this field offers. You can use these patterns in any view whether the view is designated as a list view or a single view. Note also that in the Dataform, there is no  type distinction between a list view and a single view. To make a view "single view" you set the view's per-page setting to 1. hth

It's definitely possible, including multiple rating fields per entry, computed grading by ratings, and ranking. Mostly available from 2.8 onward. That said, if the Database patch works for you and meets your requirement, it would be simpler to apply it for the desired effect.

The Dataform also supports Moodle rubrics (grading forms). It allows you to add multiple rubrics, control access to the rubrics, and include all or some in a computed grade. This requires a certain component which have not been released yet, but will be soon enough. Until then the same effect can be achieved with sets of select, radio button and/or rating fields.