1( )1. How long did the dinosaurs existA. to EarthB. on the EarthC. in EarthD. in the Earth 2How long did the dinosaurs exist___?A.to earth B.on the earth C.in earth D.in the earth 3 How long did the dinosaurs exist___? A.to earth B.on the earth C.in earth D.i...
选项A“in earth” 是错误表达,“earth” 表示 “地球” 时,常用搭配不是 “in earth” 。选项B“in the earth” 意思是 “在地球内部”,而句子询问的是恐龙在地球上存在的时间,不是在地球内部,所以该选项不符合语境。选项C“on the earth” 意思是 “在地球上” ,符合句子询问恐龙在地球上存在多久的...
During the Cretaceous, we visit the Iberian Peninsula, where hadrosauroids replaced titanosaurs as the most abundant dinosaur taxon. On the other side of the planet, a succession of geologic formations in Australia shows a gradual change from aquatic to terrestrial faunas resulting f...
5. 前文“some dinosaurs walked”用的是一般过去时, 这里 and连接并列动作, 也用一般过去时, “swim”的过去式是“swam”, 所以填“swam”。6. how fast: 表示“多快”, 这里是问恐龙移动得有多快, “fast”在此处作副词, 所以填“fast”。7. 修饰动词“moved”要用副词, “slow”的副词形式是“...
解析 D 恐龙主要生活在中生代时期,包括三叠纪、侏罗纪和白垩纪。根据古生物学研究:- 恐龙的祖先约在2.3亿年前(晚三叠世)出现- 非鸟恐龙灭绝于约6600万年前的白垩纪末期- 统治时间为约2.3亿年减6600万年 ≈ 1.64亿年逐项分析选项:A(2000万年):仅相当于地球某些较短地质时期的跨度,远小于恐龙实际存在时间B(5000...
Scientists Found New Microbes in Earth’s ‘Skin’ This Ancient Larva Still Has Its Brain And Guts An Enormous Desert Used to Be a 138-Foot-Deep Lake The Core of North America Is ‘Dripping' Away This “Battery In a Rock” Changes the Energy Game ...
But they did leave behind the same evidence that dinosaurs did: fossilized bones. The World of Dinosaurs The earliest dinosaurs lived in a world that looked very different from the Earth we know today. Rather than being separated by expansions of ocean, the continents formed a mass known as ...
it crumbled, and then the pieces fell apart and did some damage. Now, you wouldn't want that falling on your foot or your head, because it would do that to it. That would be bad. But it won't wipe out, you know, all life on Earth, so that's fine. 00:00 But it ...
Humans don't know exactly how the extinction (灭绝) of the dinosaurs on earth ___.A. came onB. came acrossC. came upD. came about 相关知识点: 试题来源: 解析 D 题目考察动词短语的辨析。需要选择与“恐龙灭绝如何发生”搭配的短语:- **A. came on**:表示“开始,来临”,通常用于自然现象或...
可知,恐龙灭绝已经是过去发生的事,应该以过去时为基准考虑时态。再结合句中 “before their extinction” 可知,恐龙在地球存活是在灭绝之前,为过去的过去发生的事情,故应选用过去完成时,排除C、D两项。又因为主语 dinosaurs 与谓语动词 exist 之间为主动关系,故正确答案为A。