The first train was invented in 1804. Prior to the train, carts or trucks would be used on rails in mines and factories to move heavy materials. ...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
When was the space rocket invented? When was the first wheelchair invented? When were roller skates invented? When was the first seatbelt invented? When was the internal combustion engine invented for airplanes? When was the elevator invented?
Unit 4 Amazing ScienceTopic 1 When was it invented?SectionB 1New words and expressionsblub n. 电灯泡 airplane n. 飞机hard-weaing adj. 耐磨的Korea n. 朝鲜;韩国At the end of the class, you will be able touse “was/were done” to introduce some inventions, like their inventors and when...
—When was the telephone ___ (invent)?—It was invented by a great ___ (invent) in 1876. And I think the telephone is a helpful ___ (invent).8. Zheng He, a Chinese ___(explore), set off from China for the first great voyage(航行) in 1405.9. Great changes have ___ place...
thecustomers.Theemployeesalsohaveaccess 5 alivevideofeedsotheycansee 6 is goingon. “Therearemanypeople 7 areeagertoworkeventhoughtheycan?tmove.Iftheyhavean opportunitytogetajob,itgivesthemconfidence,”saidtheinventor. WhileDAWNCafewas 8 (original)onlyopenforatrialrun, 9 (it)goalistofounda permane...
The radio was invented by Guglielmo Marconi in 1895. When was the digital camera developed It was developed in the 1970s. Where was it developed It was developed in Japan. What is a rocket used for It is used for sending satellites or spaceships into space. ...
Unit 6 When was it invented Section B分层作业 基础巩固 一、根据句意及首字母提示补全单词。 1.Every country has its own n___ culture. 2.Remember to l___ the door when you leave the room. 3.I bought the shirt because I liked the s___of it very much. 4.Without d___ , we...
journeytowards Antarctica.“From seeing the wildlifetowitnessingsunrises,thewholeexperiencewasamazing.Antarcticaleftanimpression onmethatnootherplacehas,”Ginnisays.“IrememberthefirsttimeIsawahumpbackwhale;it justroseoutofthewaterlikesomeprehistoric creatureandIthoughtitwassmilingatus.You couldstillheartheoperatic...
the USA dreamed of using a rocket to reach the moon.He designed a rocket that climbed forty feet into the air.That does not sound like a great distance, but it was farther than any liquid-fueled rocket had gone before.The age of space travel began. (1) The first space explorers were...
《When was it invented》SectionB PPT Unit4Topic1Whenwasitinvented?SectionB I.Choosetherightanswer.Youcandoit.(B)1.He___playcomputergamesunlesshefinishedhis homework.A.wasallowedtoB.wasnotallowedtoC.allowto (C)2.Weallknowthatpaper___wood.A.ismadeofB.ismadeintoC.ismadefrom (C)3.Thiskindof...