Ⅱ. 阅读理解。
Located in South America, the Amazon rainforest is a magical and important place for our planet. It covers an area of about 6 million square kilometres, which is almost the size of some large countries. The famous Amazon River runs through the whole rainforest, bringing water and life to thousands of plants and animals. As the world’s largest rainforest, it plays a key role in keeping our planet healthy. However, this amazing rainforest is getting “sick” day by day because of climate change and human activities. The trees may die, and the rainforest could turn into a hot and dry area in the future.
Why is the Amazon rainforest “sick”? The Amazon rainforest is one of the wettest places. Droughts(干旱) hit the rainforest and harm it a lot. They are caused by climate change. The trees don’t have enough water to grow. What’s worse, as they become dry, they can easily catch fire.
On top of this, people cut down a lot of trees for wood to make money. They clear trees to find something useful. They burn the forest to make farmland. All these have made the rainforest disappear.
What will happen if we lose it? The Amazon rainforest is the lung(肺) of our planet. The plants there take carbon dioxide(二氧化碳) out of the air and make oxygen(氧气). If the Amazon rainforest “dies”, there will be more CO₂ and our planet will become even hotter. The Amazon rainforest is also home to over 3 million species(物种) of animals and plants. Many of them can’t live anywhere else. They would be very likely to disappear.
()1. Why is the Amazon rainforest so important?
A. It helps keep our planet healthy.
B. It offers a large area for people to live.
C. It provides wood for people to make money.
()2. What causes droughts in the Amazon rainforest?
A. Human activities.
B. Climate change.
C. Fire in the rainforest.
()3. What can we infer about the Amazon rainforest?
A. It can live well with so many species.
B. Protecting it is important for animals and plants.
C. Its “sickness” is mainly caused by natural reasons.
()4. How does the writer organize the passage?
A. Show a problem → Analyze the problem → Tell the influence
B. Introduce a place → Describe its beauty → Ask people to protect it
C. List facts → Give examples → Draw a conclusion

1. A 2. B 3. B 4. A

1. 第1题：根据原文第一段"As the world’s largest rainforest, it plays a key role in keeping our planet healthy."可知，亚马逊雨林的重要性体现在它帮助维持地球的健康。B选项文中未提及它为人类提供大面积居住区域，C选项人类砍伐树木换取木材获利是破坏雨林的行为，并非雨林重要的原因，因此选A。
2. 第2题：根据原文第二段"Droughts(干旱) hit the rainforest and harm it a lot. They are caused by climate change."可知，亚马逊雨林的干旱是由气候变化导致的，因此选B。
3. 第3题：根据原文最后一段，亚马逊雨林是超过300万种动植物的家园，其中很多物种无法在其他地方生存，如果雨林消失这些物种也很可能灭绝，可以推断出保护雨林对动植物而言非常重要。A选项文中没有相关表述，C选项雨林的“病态”是气候变化和人类活动共同造成的，并非主要由自然原因导致，因此选B。
4. 第4题：文章首先介绍亚马逊雨林的基本情况，点出它正在“生病”的问题，接着用两个段落分析雨林生病的原因，也就是对问题进行剖析，最后一段阐述失去雨林会带来的严重后果，也就是说明该问题的影响，行文结构对应“展示问题→分析问题→说明影响”，因此选A。