【答案】didn'texist;more【核心短语/词汇】morethan:超过【翻译】恐龙在六十多万年前存在于地球上。【解析】根据原句句意:恐龙在六十多万年前存在于地球上。可知同义句句意:恐龙在六十多万年前没有存在于地球上。“存在”:exist,同义句是一般过去时,第一个空需要加助动词did构成否定句,didnot缩写为didn't,后...
We know they did not die at once.It might have taken a few million years for all of them to die. In the days of the dinosaurs,the whole earth was warm and wet. There were many green jungles(丛林). But the earth changed slowly all the time .When parts of the earth became cold an...
1.According to the passage, dinosaurs did exist (存在) only on the earth.A. for millions of yearsB. millions of years agoC. more than 100 million years agoD. when it was warm and wet somewhere2.One reason why dinosaurs died out is that .A. there were too many dinosaurs...
There were also terrible fights between dinosaurs. They might have happened more than 100 million years ago. Though there was no man to see any of the fights we can be told by the animal’s footprints(足迹) that fight did take place. 1. According to the passage dinosaurs did exist(存在)...
Why did gigantism exist in dinosaurs? If you want to understand gigantism in dinosaurs, you have to understand the environment they lived in. Conifers filled the landscape.Oxygen levels increased to 35%compared to 21% today. A previous theory is that the enormous frame of dinosaurs correlated ...
1 . According to the passage dinosaurs did exist ( 存在 ) only on the earth. A. for millions of years B. millions of years ago C. more than 100 million years ago D. when it was warm and wet somewhere 2 . One reason why dinosaurs died out is that . A. there were too many ...
1 . According to the passage, dinosaurs did exist ( 存在 ) only on the earth.A. for millions of years B. millions of years ago C. more than 100 million years ago D. when it was warm and wet somewhere 2 . One reason why dinosaurs died out is that . E. there were too many ...
There were also terrible rights between dinosaurs. They night have happened more than 100 million years ago. Though there was no man to see any of the fights, we can be told by the animal’s footprints(足迹)that fights did take place ...
1 . According to the passage dinosaurs did exist ( 存在 ) only on the earth. A. for millions of years B. millions of years ago C. more than 100 million years ago D. when it was warm and wet somewhere 2 . One reason why dinosaurs died out is that . A. there were too man...
1.According to the passage, dinosaurs did exist only ___on the earth. A.for millions of years B.millions of years ago C.more than 100 millions years ago D.when it was warm and wet somewhere 2.One reason why dinosaurs died out is that___. A.there ...