雅思阅读考前必看：Male ostrich erection
雅思考试的每一部分都不是容易的，听力，口语，阅读，写作，都是一点点的积累，然后运用之。阅读题最是展现你词汇量，逻辑理解的时候了，平时的阅读积累就显得尤为重要，多看多读多练习。下面是有留学群为你整理的《雅思阅读考前必看：Male ostrich》，希望对你的雅思考试有所参考价值，考出一个好的成绩。 Mystery of the male ostrich's erection solved Getting an erection is no problem for male ostriches – but maintaining it for more than a few seconds is a different matter. The birds may have inherited their underpowered genitalia from their dinosaur ancestors. The penis is a vital piece of equipment for many vertebrates. Most male reptiles and mammals have them, and two of the most ancien... [ 查看全文 ]雅思阅读考前必看：Male ostrich erection的相关文章
