We test whether a human have "basic reading comprehension" by asking them reading comprehension questions. If they answer the questions successfully, then we assume that they have this "reading comprehension" skill. Therefore, if an AI can answer these questions, then it must also have "reading comprehension".
Maybe these "reading comprehension questions" don't actually test reading comprehension, just pattern matching and sentence parsing. In which case, we shouldn't be asking these questions to anyone (human or AI). So what we need are new questions.