No one knows exactly ___ the first human appeared on Earth. A. when B. where C. ho
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
The scientists say that the human body has changed very little since human first appeared on the earth but the way we live has changed greatly. Our body has not been able to deal with these changes in life style (方式) and this has led to new kinds of sicknesses. These new sicknesses...
A.the human body has changed compared with human first appeared on earth B.the way we live has changed a little C.our body can’t deal with the changes in life style D.the way we live today is proper for the human body 3.What is the main cause mentioned in the article why people...
Study Solves Mystery of How First Animals Appeared on EarthResearch led by the Australian National University has solved the mystery of how the first animals appeared on Earth, a pivotal moment for the planet without which humans would not exist.Australian National University...
【题目】___ people first appeared on the earth. A. Nobody is sure that B.T hat nobody is sure that C. Nobody is sure when D.T hat nobody is sine 相关知识点: 试题来源: 解析 【解析】答案:C 核心短语/词汇: first:首先 appear:出现 句子译文:没有人能确定地球上最先出现人类是在 什么...
Man first appeared on earth half a million years ago. Then he was little more than an animal; but early man had several big advantages over the animals. He had a large brain, he had an upright body, he had clever hands; and he had in his brain special groups of nerve cells, not ...
1 Men have traveled ever since they first appeared on the earth. In primitive times they did not travel for pleasure but to find new places where their herds could feed, or to escape from hostile neighbors, or to find more favorable climates. They traveled on foot. Their journeys were tong...
Men have traveled ever since they first appeared on the earth. In primitive times they did not travel for pleasure but to find new places where their herds could feed or to escape unfriendly neighbours or to find more favorable climate. They traveled on foot. Their journeys were long tiring ...
Is there life on Mars(火星)?We do not know.We are sure that earth people like us cannot live on Mars.Earth people need oxygen(氧气)to breathe(呼吸),but there is almost no oxygen on Mars. when Jay appeared on the stage,all the people shouted___(兴奋地)此处用excited,还是用exciting...