🪄 6A 词汇表
📖 课文原文 · IN ONE CUBIC FOOT
In any environment—forest, mountain, water—you always see the big animals first: birds, mammals, fish. But under your feet, both on land and in the water, there are many smaller organisms: insects, tiny plants, miniature sea creatures. They may seem unimportant, but, in fact, these sea creatures and ground dwellers are “the heart of life on Earth,” according to naturalist E. O. Wilson. Without them, our world would be a very different place.
Most organisms on Earth live on the ground or just below it. Here, they are part of an important cycle. When plants and animals die, they fall to the ground. Later, tiny insects and other organisms break down the dead plant and animal material. This process eventually returns nutrients to the soil and gives living plants energy. These plants can then help to maintain a healthy environment for humans and other animals.
Despite their importance, scientists know very little about most ground organisms. To learn more, photographer David Liittschwager went to different places around the world, including a forest and a coral reef. In each place, he put a green 30-centimeter cube on the ground or in the water. Then he and his team counted and photographed the organisms that lived in or moved through the cube. Often they discovered hundreds of organisms, some only a millimeter in size. “It was like finding little gems,” he says.
按课本完整原题作答，点击图片可查看大图。字母选项对应原题；填空输入原词。开放讨论与圈画题写在笔记中，不计入客观题得分。
Before You Read
Reading Comprehension
Reading Comprehension A
Reading Comprehension B
Reading Skill & Critical Thinking
Reading Skill & Critical Thinking B
🎯 1. 目标词汇发音跟读与掌握度自测
按课本完整原题作答，点击图片可查看大图。字母选项对应原题；填空输入原词。开放讨论与圈画题写在笔记中，不计入客观题得分。
Vocabulary Practice
Vocabulary Practice A
Vocabulary Practice B
Vocabulary Practice C
🏆 Unit 6A 课后荣誉通关证书
