5 th\u00f3i quen kh\u00f4ng t\u1ed1t cho s\u1ee9c kh\u1ecfe nh\u01b0ng h\u1ea7u nh\u01b0 sinh vi\u00ean n\u00e0o c\u0169ng m\u1eafc<\/a><\/blockquote><\/iframe>