What was the Earth like 200 million years ago? The weather was warm and there was plenty of rain. Tall trees, thick bushes, and twisting (缠绕的) vines (藤) grew. In these jungles (丛林), important creatures appeared. Maybe you’ve heard of them. We call them dinosaurs. For about ...
C What was the Earth like 200 million years ago? The weather was warm and there was plenty of rain.Tall trees, thick bushes, and twisting vines(藤蔓) grew. In these jungles(丛林), important creatures appeared. Maybe you've heard of them. We call them dinosaurs.For about 160 million yea...
句意:自2亿年前以来,鳄鱼就一直生活在地球上。 考查连词及介词词义辨析。while当……的时候;after在……之后;since自从;unless除非。根据“Crocodiles have been living on the earth…200 million years ago.”可知,此处是含有since的现在完成时,表示从2亿年前以来鳄鱼就一直在地球上生活。故选C。反馈 收藏 ...
百度试题 结果1 题目Crocodiles have been living on the earth ___ 200 million years ago.A:whileB:afterC:sinceD:unless 相关知识点: 试题来源: 解析 C 略 反馈 收藏
1【题目】 Around 200 million years ago, the earth was 18 degrees warmer than it is now. That might be a bit hot for humans, but it wasjust right for the giant dinosaurs that wandered about the earth during the Mesozoic (中生代的) era. A new study found that planteatingdinosaurs may ...
Around 200 million years ago, the earth was 18 degrees warmer than it is now. That might be a bit hot for humans, but it was just right for the giant dinosaurs that wandered about the earth during the Mesozoic era. A new study found that planteating dino
Paragraph 6: Oxygen has continued to play a key role in the evolution and form of life. Over the last 200 million years, the concentration of oxygen has risen from 10 percent to as much as 25 percent of the atmosphere, before setting (probably not permanently) at its current value of 21...
Around 200 million years ago the earth was 18 degrees warmer than it is now. That might be a bit hot for humans but it was just right for the giant dinosaurs that wandered about the earth during the Mesozoic (中生代的) era. A new study found that planteating dinosaurs may have contribut...
20__million__times__in__all__during__ten__years.__Scientists__suggest__the__earliest__launch__could__be__in__just__16__years.Not__all__the__scientists__agree__with__the__idea.__some__suppose__there__should__be__easier__and__much__cheaper__ways__to__prevent__the__earth__...
根据“Over 200 million years ago, on Earth there…a group of animals: the dinosaurs.”可知,此处为there be句型,时态为一般过去时,由空后的不定冠词a可知,用单数形式。故选D。 (4)题详解: 句意:它们统治地球长达1.5亿年。 in在……期间;of……的;for达,计;to到。根据“They have dominated (...