The ____ of Moscow is ____ 13,200,000 people. It ____ Troitzk, Zelenograd and some other towns. Its ____ is ____ 2,500 ____ kilometers. ____ the capital of Russia was ____ Moscow, but ____ Saint Petersbrug. According to a ____, dolphins have a bigger ____, than sharks. Its weight is ____ 1,600 grams. This makes dolphins second only to humans in brain-to-body weight ratio.

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