>Bonjour,
>
>I the words "je crois" the 'r' is clearly not pronounced (to my ears). Is this a rule that the 'r' in this position of a word is never pronounced? Or an exception?

It's pronounced, but not as "r"; in French, that "cr" combination is more like "kw." I'd pronounce "je crois" as:

zhuh kwah

Tamar