April 7, 1827: English chemist John Walker invents wooden matches. ……

) cloth.1937American law student Chester F. Carlson invents thephotocopier(复印机).1939Russian born Igor...一起来看看在20世纪里改变了我们生活的诸多发明。1902US engineer Willis Carrier invents theair conditioner(空调).Thelie ……

) to clean up the mess. My mother brought a sponge (海绵) and a towel from the kitchen. After we cleaned it up... (毁坏), and the soda left a stain (污点) on the towel, but the sponge still looks clean.”“Yes. So ……

results.”The jury (评判委员会) noted that “the student created a ‘sponge (海绵)’ that absorbs both carbon... into oceans every year, according to the Stockholm International Water Institute. Both issues continue ……

. Oceans are essential to human beings because they provide us with oxygen, food and clean water. 1. Oceans are essential to human beings because they provide us with oxygen, food and clean water ……

Our oceans are an important resource. TUCHONGOur oceans are an important resource. TUCHONG世界海洋日，让我... of seawater – the ocean. In 2008, the United Nations recognized (确立) June 8 as World Oceans Day ……

is a sponge (海绵). He lives with his pet (宠物) snail2 Gary under the sea. They have a lot of friends... a good heart. Sandy (珊迪) She is a squirrel (松鼠). She invents (发明) many things. She wears an ……

Squeeze the past like a sponge (海绵), smell the present like a rose, and send a kiss to the future. Arabic proverb ……

I'm full of holes, yet I'm full of water. What am I?Answer: A sponge (海绵) ……

, Gerba said, researchers have found that the place with the most bacteria is the kitchen sponge (海绵).“The sponge is a happy home for bacteria. It’s wet and it’s sucking (吸收) up food all of the time,” he ……

when eating.To clean your keyboard, gently shake out the crumbs or wipe with alcohol.TV remote....Wash your hands regularly.Kitchen sponge (海绵)Funnily enough, the very sponge that makes your dishes ……

你也有机会去南北极探险哦！
African high school student’s dream will come true. On October 18, Wolmarans, together with other seven... people will have to clean up trash from the beach and sea. They will also fix coral reefs (珊瑚礁) and water ……

家里的小花园Do you want a garden in your house? Look at the picture! The Frenchman, Jean-Marc Batard, invents (发明) a garden. It saves (节省) water and room (空间). ……

的题目和首句已为你写好。   Our Oceans, Our ResponsibilityOur Oceans, Our ResponsibilityOur Oceans, Our ResponsibilityJune 8 was officially named by the UN in 2009 as World Oceans Day ……

.  SCREENSHOT FROM SHENZHEN SATELLITE TVA middle school student invents a smart robot that collects homework A middle school student invents a smart robot that collects homework 深圳 ……