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2023年黑龙江省牡丹江市中考英语 Liam Pope-Lau is a student at St. Michaels University School in Victoria, Canada. A few years ago, he fell into the ocean when he was learning to sail (航行) on a boat. He had no idea what he wa...
out tonight. 2. do you know who___ (invent) the paper? 3. i can\\\'t ___ (imagination) a life without the internet. 4. my grandfather told me that he used oil ___ (lamp) at night when he was a child....
NASA came up with at least one solution to that problem. Marc Serota/Getty Images After NASA launches a shuttle into space, a slew of fuel and chemical waste remain on the launching pad and surrounding area. One compound in particular, trichloroethylene, also called "trike," takes a ...
In Jalisco, Mexico, just outside Volcán de Tequila, is this agave field. The Aztecs reportedly used agave as a disinfectant. Matt Mawson / Getty Images The Aztecs, often associated with warfare and elaborate rituals, gave birth to a sophisticated system of government that governed vast territo...
Recently, a British woman used an ancient Chinese invention to help her son 1 a math problem.Dr Mantri grew up in India. She was taught2 to use an abacus (盘) to solve math problems when she was young. After noticing that her son Dhruv had great difficulty with math, she started ...
A.inB.ofC.onD. with)32. A.mistakeB.productC.worldD.material)33. A.forB.outC.afterD. around)34. A.madeB. were madeC. have madeD. had made)35. A.thingB.endingC. beginningD.fact 2【题目】完形填空。There have been many great inventions that change the way we live.The first ...
re speeding up or slowing down, and adjust themselves accordingly. The wheels lock when you’re taking the stairs. With Moonwalkers, you can walk at speeds up to seven m.p.h. That’s more than twice as fast as the average gait. You can go farther without tiring out.—By Pranav ...
NASA came up with at least one solution to that problem. Marc Serota/Getty Images After NASA launches a shuttle into space, a slew of fuel and chemical waste remain on the launching pad and surrounding area. One compound in particular, trichloroethylene, also called "trike," takes a ...
While it found some utility as an outdoor streetlight, the electric arc lamp could not function as a lighting fixture in the home. James Bowman Lindsay and Warren de la Rue Chemists after Davy came to understand that the key to a sustainable incandescent lamp was choosing a filament that, ...