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nlth17092003
2 năm trước
Phương trình hóa học nào sau đây viết đúng? A:2HCl + Mg → MgCl2 + H2 B:HCl + Mg → MgCl2 + H2 C:2HCl + Mg → MgCl2 + 2H2 D:2HCl + 2Mg → 2MgCl2 + H2
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1Read the passage, and answer the questions. The Amazon River in South America is an amazing and important river for the planet. The Amazon River carries more water than any other river in the world. In fact, the Amazon River is responsible for twenty percent of fresh water that flows into the world's oceans. The Amazon River is the second longest river in the world (the Nile River in Africa is the longest), and about 6,400 km long. The Amazon River has the largest area of land that flows into the river, and more tributaries than any other river in the world - more than 200 tributaries. 61. How many percentage of fresh water flowing into the world's oceans is the Amazon River responsible for? 62. Does the Amazon River carry more water than any other river in the world? 63. How long is the Amazon River? 64. What is the longest river in the world? 65. How many tributaries does it have?

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