Water makes up about 71% of the Earth's surface, but no one knows how or when such massive quantities of water arrived on the Earth. A new study published in the journal Nature brings scientists one step closer to answering that question.Led by University of Maryland Assistant Professor of...
句子主语是“So much water on the Earth’s surface”,谓语动词是make,此处主语是不可数名词,谓语动词用单数,故填makes。 (8)题详解: 句意:它给予我们空气。空处作give的宾语,应用宾格,故填us。 (9)题详解: 句意:它还保护我们免受来自太阳的有害射线。空处修饰名词rays,应用形容词harmful,表示“有害...
词汇1. how much多少句型2. Water makes up about 60 percent of your body weight.水约占你体重的60%3. You've probably heard the advice,"Drink eight glasses of water a day."你可能听过这样的建议"每天喝八杯水。 " 相关知识点: 试题来源: 解析 答案见上1.多少 2.水约占你体重的60%。 3.你...
结果1 题目 词汇. how much 多少句型2. Water makes up about 60 percent of your body weight.水约占你体重的60%3. You've probably heard the advice “Drink eight glasses of water a day .”你可能听过这样的建议每天喝八杯水。 相关知识点: 试题来源: 解析 答案见上 反馈 收藏 ...
Water makes up 71% of the Earth’s surface, but no one knows how or when such massive quantities of water arrived on the Earth. A new study published in the journalNaturebrings scientists one step closer to answering that question.
Water is made up of two elements, hydrogen and oxygen. How many hydrogen atoms are there in one molecule of water? A. One B. Two C. Three D. Four 相关知识点: 试题来源: 解析 B。解析:一个水分子的化学式是H₂O,这表示一个水分子由两个氢原子和一个氧原子组成,所以答案是B。A选项一...
sent of water in the world, we can only use fresh water, that there is only a little. So we should use little water when we need to use it. For example, I do not use too much water when I am washing my face or having a bath… It is important for us to keep the water clean...
Many years ago, the earth is very clean. but nowadays there is much pollution on the earth.There is air pollution, land pollution and water pollution.People are cutting down the forests. Many wild animals, birds and insects lose their homes. People are killing animals for their food and the...
1、Use water in as much ways as you can. 2、Replace worn washers 3、Publicize the knowledge of water saving Please remember the tips up,find more ways of water saving and start to Save Water today! 节约用水的英语作文 篇8 The human race is using up water faster than we can replace it...
Some people think theres much water on the earth.In fact,there is only a little water for us to use now.If we dont save it,it will surely be used out some day.Then what should we do? First,when we finish washing the clothes,we can use the water to clean the floor.Second,if we...