读句子,想象句子情景,写出反义词。
树上长满绿叶,红色的小鸟在叶中捉着迷藏。树下坐着一个大人和一个立着的孩子。
____ ____ ____
World Wildlife Fund ____(感激) very much the efforts that China has made to protect endangered species from being further endangered.
检验二氧化碳的试剂是____ ,不能用燃烧的木条放入瓶中看是否熄灭来验证二氧化碳,是因为 ____