But even if there had been water, life doesn't start overnight. Even a simple microbe is the product of complex chemical systems that take millions of years to evolve. Had the water lasted long enough

发表于:2018-12-07 / 阅读(43) / 评论(0) 分类 火星生命

The Taiga 针叶林 The taiga is the forest in cold areas of the Earth. 针叶林是位于地球寒冷地区的森林。 We can find the taiga in Alaska, Russia, Canada, Finland and many other places. 阿拉斯加、俄罗斯、加拿大、芬兰和许

发表于:2019-01-10 / 阅读(43) / 评论(0) 分类 与美国小学生一起学英文第8册

MARS Mars According to the best evidence gathered by space probes and astronomers, Mars is an inhospitable planet, more similar to Earth's Moon than to Earth itself-a dry,stark,seemingly lifeless world. Mars' air pressure is equal to Earth's at an al

发表于:2019-02-17 / 阅读(22) / 评论(0) 分类 双语有声阅读

Soil、earth、ground和land都可以表示地面,但这四个词的用法有很大的区别。一起来看看吧! soil意为:泥土、土壤,尤指生长植物的土地。或国家、国土。 The trees have rooted in the rich soil. 树木在肥

发表于:2019-02-18 / 阅读(74) / 评论(0) 分类 英文语法词汇

模仿文本: The theme of this final programme from the frozen South was always going to be about human life and the human presence in Antarctica. But the dramas which befell our ship, the Akademik Shokalskiy, capture exactly how vulnerable people

发表于:2019-03-06 / 阅读(159) / 评论(0) 分类 英音模仿秀

A Fresh Breath of Methane 很早很早以前地球有很微量的氧气,而且地表状况十分恶劣。大气主要是N2和Co2,后来通过复杂的变化,地球开始出现了厌氧型生物。在生命的作用下,地球的氧气开始不断

发表于:2019-03-09 / 阅读(95) / 评论(0) 分类 英语听力文摘 English Digest