81.答案:When did humans start to use tools?解析:根据句意,本题是一般过去时的特殊疑问句,要用When提问,后面跟did,再加主语humans,主语后面再跟动词短语start to use tools.82.答案:I have never heard from him ever since he left.解析:根据句意,本题主句是现在完成时的句子,主语是I,后面跟have,再...
1例When early humans hunted and gathered food,they were notin control of their environment.They could only interact withtheir surroundings as lower organisms did.When humanslearned to make fire,however,they became capable ofaltering their environment.To provide themselves with fuelthey stripped bark ...
B:Thelibrary.wanttoborrowsomebooks.A:26B:Aboutinventions.Youknowhavetoprepareforthesciencelesson.A:27Andwehumansarereallygreat.B:Thafstrue.Peoplehavemadelotsofinventions.A:28B:Sorry,mnotsure.29A:dontagree.nmyopinion,carsarethemostuseful.B:30A:Becausecangoanywherequicklyandconvenientlyincars.A.Maybe...
”a philosophy that encourages you to engage directly with the world around you. It's about learning from real-life experiences, and discovering a more profound and engaging way to learn.
What Happens When a Former Tesla Employee Decides to Solve Bad Hangovers? In this episode of Shopify Masters, you’ll learn how a former Tesla employee discovered a business idea during a trip to South Korea, quickly launched a simple landing page, and then went back to design a real brand...
百度试题 结果1 题目(A)37.-When did humans(人类) first ___ on the moon?-In 1969. A. land B. train C. beat 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
根据“Without bees moving pollen from one flower to another, many plants can’t grow fruits.”可知,没有蜜蜂把花粉从一朵花传到另一朵花,许多植物就不能结果。故填Because there are no bees moving pollen from one flower to another./Because no bees move pollen from one flower to another. (2)题...
to a greater extent than did that of couples who married in earlier [JY](8)___ as well as later decades. Since the United States maintained its [JY](9)___ dubious distinction of having the highest divorce rate in the world, the...
When looking for some vacation ideas to spread out and get some time and space to yourself, check out these great resorts (度假胜地) options.Hyatt Ziva Cap CanaLocated in Punta Cana, this family-friendly vacation at an all-inclusive resort offers something for everyone in your party. Parents...
In college I had been taught that a successful educator should ignore bad behavior. So I did, confident that, as the textbook had said, the bad behavior would disappear as I gave my students positive attention. It sounds reasonable, b...