内容正文:
B3 U1基础知识检测
单句语法填空
1. The Amazon rainforest crosses into eight countries, __________ (include) Brazil and Peru, and one overseas region of France, all on the South American continent.
2. The Amazon River, __________ which the Amazon rainforest gets its name, is close to 6400 kilometers in length--- roughly 100 kilometers longer than the Yangtze River.
3. On __________ (it) journey from the mountains to the ocean, the river supports many different ecosystems.
4. These ecosystems give this area the richest biodiversity on the Earth: one in ten __________ (know) species in the world can be found here.
5. Over the past 50 years, about 17 per cent of the rainforest __________ (disappear) due to human activities such as agriculture and cattle farming.
6. As the impact of human activities continues to grow and the list of species in danger of __________ (extinct) become longer, we are left with a question: can we afford to damage the “lungs of the planet”?
7. The Amazon rainforest is home to a great variety of plant life; __________, its soil is surprisingly poor in nutrients.
8. If a scientist is shown a report __________ (list) the nutrients of that soil, he or she will probably think that only desert plants can survive in it!
9. Most of the forest’s nutrients are locked up in the plants themselves, thus __________ (allow) them to grow at an unbelievable speed.
10. I highly recommend the documentary. It’s about some of the worst __________ (environment) problems we’re facing today.
11. Global warming, for example, is a major problem __________ (cause) by greenhouse gases. It may lead to extreme weather events: droughts, heatwaves and so on.
12. All of them come up with __________ (create) ideas on how to solve these problems.
13. Some call for the __________ (apply) of modern technology, and others a change of lifestyle.
14. Last weekend, I took part in a forest clean-up activity. It was organized by GreenHope, an organization __________ (devote) to protecting forest