Chrome，
QQ浏览器
.
![[地球奥秘]必修一第一课第二课时：行星地球，同学们可以来学习了！](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F2a05463906c5b0ae92acf1bd938ca967b227041c.jpg%40672w_378h_1c_%21web-search-common-cover)
![[地理小课堂]地球的运动 6分钟看懂地球的自转和公转 日月星辰的东升西落 寒来暑往的四季变化 微课比赛视频](http://imgshow.1ydt.com/img?url=%2F%2Fi1.hdslb.com%2Fbfs%2Farchive%2F2fd05c4f00e611030d9b52a292e13e586c683412.jpg%40672w_378h_1c_%21web-search-common-cover)
![1.3第三节 地球的历史[人教版高中地理必修一]](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F3a19f3bd6af38d1445bf8464570adbbcbc2968ed.jpg%40672w_378h_1c_%21web-search-common-cover)
.