The Amazon River stretches 3,980 miles across South America. Although the River Nile in Africa is the longest river, the Amazon is the largest river by discharge volume of water in the world. Every second, an estimated 219,000 cubic metres of water from this river enters the Pacific Ocean. In addition, the Amazon River Basin is the place A______________. There is no exact explanation of B______________. Nevertheless, most scientists agree that it was formed about 11 million years ago, C______________. One theory is that when the Andes mountain range was created 15 million years ago, the previously existing west-flowing river's route was blocked, D______________. As this lake grew in size, the marine species that could no longer reach the sea evolved into freshwater creatures. This would explain the diverse species found in the river today, E______________. About 5 million years later, the trapped water eroded away the sandstone and slowly moved eastward. During the Ice Age, F______________, the water began to flow down into the sea, giving birth to the Amazon River. 1. how the river was formed 2. which are closely related to their marine relatives in the Pacific Ocean 3. but was reshaped into its current course by a powerful force 2.4 million years ago 4. as sea levels dropped 5. creating a lake that gradually filled 6. that are incredible 7. where the largest rainforest on Earth is located

Давайте разберем текст и вставим подходящие фразы в пропуски, исходя из логики и последовательности описания. Текст с пропусками: The Amazon River Basin is the place A______________. (7) There is no exact explanation of B______________. (2) Nevertheless, most scientists agree that it was formed about 11 million years ago, C______________. (1) One theory is that when the Andes mountain range was created 15 million years ago, the previously existing west-flowing river's route was blocked, D______________. (3) As this lake grew in size, the marine species that could no longer reach the sea evolved into freshwater creatures. This would explain the diverse species found in the river today, E______________. (6) About 5 million years later, the trapped water eroded away the sandstone and slowly moved eastward. During the Ice Age, F______________, the water began to flow down into the sea, giving birth to the Amazon River. (4) Теперь подставим выбранные фразы и объясним выбор: --- **A — 7. where the largest rainforest on Earth is located** **Обоснование:** Речь идет о бассейне Амазонки — это самый крупный тропический лес, расположенный на Земле. **B — 2. which are closely related to their marine relatives in the Pacific Ocean** **Обоснование:** В предложении упоминается, что нет точного объяснения, и именно эта фраза лучше всего подходит, говоря о некоторых видах, связанных с морскими родственниками. **C — 1. how the river was formed** **Обоснование:** Говоря о временном происхождении реки — около 11 миллионов лет назад — явно речь идет о вопросе о том, как река сформировалась. **D — 3. but was reshaped into its current course by a powerful force 2.4 million years ago** **Обоснование:** Помимо того, что река была создана, важный момент — ее формирование было адаптировано под воздействием мощных сил примерно 2,4 миллиона лет назад. **E — 6. that are incredible** **Обоснование:** Это дополнение к описанию разнообразных видов – они впечатляющие. **F — 4. as sea levels dropped** **Обоснование:** Время льда и снижение уровня моря — это момент, когда вода начала течь в море, образуя современную реку. --- **Итоговое решение с вставками и пояснениями:** The Amazon River Basin is the place **7. where the largest rainforest on Earth is located**. There is no exact explanation of **2. which are closely related to their marine relatives in the Pacific Ocean**. Nevertheless, most scientists agree that it was formed about 11 million years ago, **1. how the river was formed**. One theory is that when the Andes mountain range was created 15 million years ago, the previously existing west-flowing river's route was blocked, **3. but was reshaped into its current course by a powerful force 2.4 million years ago**. As this lake grew in size, the marine species that could no longer reach the sea evolved into freshwater creatures. This would explain the diverse species found in the river today, **6. that are incredible**. About 5 million years later, the trapped water eroded away the sandstone and slowly moved eastward. During the Ice Age, **4. as sea levels dropped**, the water began to flow down into the sea, giving birth to the Amazon River. --- Если нужно, я могу подготовить объяснение каждого пункта подробнее!