由于胚胎干细胞在医学应用上存在着免疫排斥以及伦理窘境等壁垒,科学家们努力尝试寻找其他途径代替胚胎干细胞。日本京都大学教授山中伸弥与他的研究团队通过诱导人体表皮细胞实验,成功培育出诱导多能干细胞。诱导多能干细胞可转变为心脏和神经细胞,为研究治疗多种心血管绝症提供了巨大助力。诱导多能干细胞的发现,更新了人们认为细胞的命运不可逆转的观念。这一研究成果在全世界被广泛应用,山中伸弥因在细胞研究领域的杰出贡献而获得2012年诺贝尔生理学奖。上述材料如何体现了实践与认识的辩证关系原理。
--- Many people think that people born under the same star sign always share the same personalities. --- _________. Some are a just coincidence (巧合), others are the only similar.
-- I’d like a cup of black coffee. What about you, Mike? --- I prefer coffee __________ sugar.
---What is Wang Lin’s personality? ---He has no idea of his own. He always __________ his friends about everything.
It is she who _________ me with my English every day.
As a student, I can’t afford __________ a new mobile phone.