阅读下面短文, 在空白处填入1个适当的单词或括号内单词的正确形式。
The Amazon rainforest, as the largest rainforest in the world, plays a significant role in maintaining the fine balance of the Earth's ecosystem.
The Amazon rainforest crosses into eight countries, including Brazil, Peru and one overseas region of France. 【小题1】 an area of around 6 million square kilometres, the Amazon rainforest is more than half 【小题2】 size of China. The Amazon River, from 【小题3】 the rainforest gets its name, is close to 6, 400 kilometres in 【小题4】 (long). On its journey from the mountains to the ocean, the river supports many different ecosystems. They give this area the richest biodiversity on the Earth: one in ten 【小题5】 (know)species in the world can be found here.
More than 1,300 species of birds and over 400 species of mammals hide among the jungle's plant life. The jaguar is one example. 【小题6】 a significant number of jaguars survive here, they are only one element of this forest's food chain. They feed on at least 87 species, including frogs. These frogs, in turn, feed on insects which eat 【小题7】 (leaf) and fruit.
The Amazon rainforest breathes life into the planet by fixing carbon and producing over 20 per cent of all the Earth's oxygen. Thus, it is often called the "lungs of the planet". Moreover, the Amazon rainforest is a treasure house of species that 【小题8】 (use)for food or medicine. Yet there is one major danger to these irreplaceable plants and animals: us. As the impact of human activities grows 【小题9】 (rapid), we are left with a question: can we afford 【小题10】 (damage) the "lungs of the planet"?
