A. that B. when C. where D. why 相关知识点: 试题来源: 解析 B。“when the first humans appeared on Earth”是对“mystery”的解释说明,“谜团是人类第一次出现在地球上是什么时候”,用“when”引导同位语从句,表示时间。反馈 收藏
[translate] aWhen the first humans appeared on earth, dinosaurs have been extinct for several million years! It is through the discovery of fossil dinosaur. 当第一个人在地球上出现,恐龙是绝种几百万年! 它是通过在化石恐龙的发现上。 [translate] ...
aregola automaticamente 自动规则[translate] aWhen the first humans appeared on earth, dinosaurs have been extinct for several million years!people through the discovery of fossil dinosaur. 当第一个人在地球上出现,恐龙是绝种几百万年! 人们通过在化石恐龙的发现上。[translate]...
36. Early humans' paintings don't tell us A. when the first human appeared B. how they walked C. where they lived D. how they lived37. Early humans had to move around in order to A. find more caves to live in B. protect themselves from animals C. look for food and water D. ...
First Humans in the American Deserts After investigations by generations of scholars, the case of the prehistoric human adventure in the deserts of North America has emerged as a rich, if largely unresolved, detective story, complete with abundant and often puzzling clues, no living witnesses, and...
Passage 6The human story began around 65 million years ago, when animals first appeared on the earth. Over thou-sands of years, they became almost humans. Their brains became much 1.(big), and they learned how to use language, light fires and make tools. Modern humans-people like us-dev...
The first humans emerged in Africa around two million years ago, long before the modern humans known as Homo sapiens appeared on the same continent. There's
In this manner, seawater directly beneath freshly formed sea ice has a higher sapnity than it did before the ice appeared. Of course, when this ice melts, it will tend to decrease the sapnity of the surrounding water.In the Weddell Sea, the densest water in the ocean is formed as a ...
Many scientists believe modern humans first appeared in Africa. By 20,000 B.C., they had travelled and settled all over the world. They travelled farthest during 【小题3】 Ice Ages, when most seas were frozen, leaving bridges of dry land, 【小题4】 people could walk across.The first ...
Clifford, the Big Red Dog, first appeared 50 years ago, along with Emily Elizabeth, the little girl who loves him. Today we have Norman Bridwell, to talk with NPR's reporter on his dog's 50th birthday. So, Norman, tell us how it all started. Well, it was 1962 and I was struggling...