第3 题:文中提到 “For as long as the Earth has sustained life, it has also seen the permanent disappearance of life forms, the dinosaurs being a particularly extreme example.”,说明地球上物种灭绝一直存在,恐龙灭绝是一个极端例子,表明某一物种的灭绝并非罕见情况。选项 B 符合文意。答案是 B。 第...
Life on Earth was still recovering from the end- Permian mass extinction of 252 million years ago, and the first dinosaurs were appearing.”可知,在两亿五千二百万年前,有一次大规模 的物种灭绝,因此在恐龙出现前有其他动物的存在。 13.D考查目标细节理解题。 根据第六段的“For instance, its nostrils...
The Earth is over 4 billion years old and the dinosaurs were dominant some 200-250 million years ago. It is safe to say that there was extensive life present on Earth before the dinosaurs as some of that life had to evolve into the dinosaurs....
Was there life before the Cretaceous Period? In what time period was the Triassic mass extinction? What dinosaurs were in the Jurassic period? How long ago was the late Triassic Period? Were there dinosaurs in the Paleolithic time period?
Then from out of the silence, imminent and threatening, there came once more that low, throaty croaking, far louder and closer than before. There could no longer be a doubt. Something was on my trail, and was closing in upon me every minute. I stood like a man paralyzed, still ...
Tobehonest,I'veneverbeenmuchofabirdperson.Ialsohaveahealthyrespectforbirds.They'rebasicallylivingdinosaurs(恐龙).Iwishthey'dchosenanothergarden.ThereareonlysomanysunnydaysinSeattle,andIstillcan'tdoanygardeningoutthere.ButI‘malsothankfulthatIgottoseethislittlebitofnature.It'sprettyamazing.Theexperiencehas...
Some people even dream of bringing ancient creatures such as dinosaurs back to life. Although no animals have been brought back yet, scientists have managed to grow a number of ancient plants from seeds. By far the oldest of these plants is a 32,000-old plant that has been grown again ...
5. There you can see the fossils of many kinds of dinosaurs. 在那里你能看到许多中恐龙的化石。 fossil意思为“化石”,是不可数名词;口语中还可指“守旧的人;落伍的人”。例如: My grandpa doesn’t want to be an old fossil. 我爷爷可不愿做个落伍的人。 6. These eggs were found in the Gobi...
But paleontologists, the ones who study fossils and forms of ancient life, point out its similarity to some dinosaur species. I mean, it is very different from modern birds in some important ways—I mean, there’s no beak, the tail is long and bony the way a reptile’s is, rather tha...
5. There you can see the fossils of many kinds of dinosaurs. 在那里你能看到许多中恐龙的化石。 fossil意思为“化石”,是不可数名词;口语中还可指“守旧的人;落伍的人”。例如: My grandpa doesn’t want to be an old fossil. 我爷爷可不愿做个落伍的人。