Angola is self-sufficient in oil but not in food like most other African countries is a true statement based on the given information.
<u>Explanation:
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Though Angola produces surplus oil that it can export to other countries and fetch great foreign revenue from, it does not help the country become self-sufficient as far as the supply of food is concerned.
Thus, Angola has to import food from other African countries that are not as rich as Angola is. This exhibits a special kind of imbalance prevalent in the continent of Africa.