【题文】 We see humans all around us. But when was the first human seen? Early humans did not leave behind any written records. However, they left behind many paintings on the walls of the caves(洞穴) where they lived. These paintings tell about their life, and we know these early hu...
C We see humans all around us. But when was the first human seen? Early humans did not leave behind any written records.However, they left behind many paintings on the walls of the caves(洞穴) where they lived. These paintings tell about their life, and we know these early humans walke...
Weseehumansallaroundus.Butwhenwasthefirsthumanseen?Earlyhumansdidnotleavebehindanywrittenrecords.However,theyleftbehindmanypaintingsonthewallsofthecaves(洞穴)wheretheylived.Thesepaintingstellabouttheirlife,andweknowtheseearlyhumanswalkedonfourlimbs(四肢)likeapes(猿).Also,theydidnotliveatoneplacebutmovedfromplace...
CWeseehumansallaroundus.Butwhenwasthefirsthumanseen?Earlyhumansdidnotleavebehindanywrittenrecords.However,theyleftbehindmanypaintingsonthewallsofthecaves(洞穴)wheretheylived.Thesepaintingstellabouttheirlife,andweknowtheseearlyhumanswalkedonfourlimbs(四肢)likeapes(猿).Also,theydidnotliveatoneplacebutmovedfrompla...
根据第一段Howeve-|||-r,they left behind many paintings on the wal-|||-ls of the caves(洞穴)where they lived.Thes-|||-e paintings tell about their life and we kno-|||-w these early humans walked on four limbs-|||-(四肢)like apes(猿).Also,they did not liv-|||-e at one ...
How the red 4.___(tell) by these paintings, and we could know these early humans walk four limbs (四肢) like apes (猿). Also, they did not live at one place but moved from place to another for 5.___search) food and water.Without...
A.Theydidnothavesufficientfund. B.Noready-madecomponentswereavailable. C.Therewasnomodelintheirmind. D.Itwashardforthemtoassemblethecomponents. ( )6.Whatdoweknowabouttheroboticfly? A.Theroboticflyhasbeenputintowideapplication. B.Theroboticflyconsistsofaflightdeviceandacontrolsystem. C.Theroboticflycan...
But you did a good job in. All of you tied your best in. And ever through you are a newcomer. You have also given me a lot of help. Do you remember last Friday? You have. Don't mention it. It was my pleasure by the way. And you Free this evening. Yes. What for? Well, ...
Study: When Hunger Strikes, Humans Walk a Predictable PathKim, Meeri
students at one school did just that! They jumped on bikes connected to generators (发 电机) and pedaled in place. Soon they were producing electricity. This energy is needed to run their computers. Here is how bicycle - powered energy works. When a student pedals the bike,the back wheel...