A-A+ About 80% of what you see floating in a ray of 2022-08-02 00:04:13 问答库 阅读 168 次 问题详情 About 80% of what you see floating in a ray of sunshine is ______.A．dustB．dead human skinC．quill-covertsD．fluff请帮忙给出正确答案和分析，谢谢！ 参考答案 正确答案：B
