题目The Amazon rainforest is the largest rainforest in the world,which plays a significant role in(1) maintaining(maintain) the fine balance of the Earth's ecosystem.It(2) crosses(cross) into eight countries and covers(3) an area of around 6 million square kilometers....
On which continent will you find the Amazon River, Amazon Rainforest and the Andes mountains? North America Asia Europe South America 多项选择 What is the land feature that separates The United States and Mexico? The Great Lakes Mississippi River Rio Grande River The Rocky Mountains 多项选择 ...