Throughout Duolingo, in the slower version she pronounces "les" (lay) when the sentence calls for "le" (le rhymes with "u" in the english word "put")... So, once you understand the sentence after slowing it, then go back to the regular speed and listen for it, as initially I thought she was saying Les poissons in this particular example.
It's more a matter of memorising than noticing. Try to remember the word together with something to indicate gender. Eg remember le poisson is the fish, un Poisson is a fish, du Poisson is some fish instead of remembering Poisson is fish, le is the (m), un is one(m) du is some (m). That way the gender will come more naturally.
Hiya Alli, Have you actually eaten banana with rice? Try it. Bit like eating grass with nettles. Seriously though, what is most likely, fish with rice or banana with rice? Duo is compuker rigged (I choose my words and spelling) Always choose the most likely. There's a reason for those annoying hover alternatives in the tasks and for the life of me I don't see their immediate usefulness. I avoid them. Votre ami JJ.
Bananas and rice are great together! Here are two examples: http://www.myrecipes.com/recipe/coconut-curry-bananas-rice
They should not offer any choices that could be correct if they're not going to count them as correct
If you are referring to nouns Morgan, then you don't know. they just need to be memorised as there is no rhyme nor reason to Romanic gender. In singular, one way to know is to note the article. Le refers to a masculine noun, La refers to a feminine noun, Son is reflecting a possessive referring to a masculine noun, Sa is a possessive reflecting a feminine noun. Du reflects a masculine noun and Sa reflects a feminine noun. Ton is a possessive reflecting a masculine noun and Ta is a possessive reflecting a feminine noun. The reason why noun genders must be memorised is because in the Polite/Formal "Votre" there's no implied gender and in all plurals one can not deduce gender from the article.