Why not "Does this sandwich include meat?"? I agree that "contain" is more natural, but "include" is not wrong.
I asked a native, here's the answer:
I don't think so.
The ingredients in this sandwich include cheese but the the sandwich itself contains cheese.
Honestly, it is very annoying that 33% of all Polish audio has a wrong intonation. And it is terribly counterproductive for students who learn Polish mostly here with this course.
I have to agree with that. Im polish and that hurts my ears that someone could misspell the pronunciation that bad
Ashibaal's comment is 5 years old and refers to completely different audio, which was way worse. I don't hear any problem with this sentence, could you please say what hurts you here?