Water is so vital to our survival, but strangely enough, we don’t know the first thing about it—literally the first. Where does water, a giver and taker of life on planet Earth, come from? When I was in junior high school, my science teacher taught us about the water cycle—evapora...
About 70 percent of our planet’s surface is covered with water, and it plays an important role in our daily lives. But how did water get on Earth in the first place?
根据课文内容可知,水是有用的(形容词useful),我们用水(不可数名词water)来喝(动词原形drink)和(并列连词and)清洁(动词原形clean)东西.很多地方没有许多(不定代词much)水.我们不应该浪费(动词原形waste)水.我们应该再利用(动词原形reuse)水和节约(动词原形save)用水.我们的大部分能源来自(三人称单数comes from)...
How to protect the Earth? Water is useful_. We use water to clean_ things. There's not _much water in many places. We shouldn't waste water.We should reuse and save it. Most of our energy comes from coal and oil . We use energy to drive cars. There's not too much_ energy. ...
46. Some desert plants grow d___ into the earth to get water. 47. Humor is a type of language art, which brings a lot of p___ and laughter to our daily life. 48. In Beijing, people’s act of k___ makes me feel warm...
Water is essential for life on Earth and is one of our most precious natural resources. But considering how our planet formed, it is quite surprising how much water we still have. The Earth aggregated from a cloud of gas and dust – a protoplanetary disk
Water is the most valuable resource on the earth. Water is the necessity of our life and we must drink it everyday. Now many people can not drink clear water because many of them are badly polluted. So in order to save water the first thing we should do is reduce water pollution. In...
Water is the most valuable resource on the earth. Water is the necessity of our life and we must drink it everyday. Now many people can not drink clear water because many of them are badly polluted. So in order to save water the first thing we should do is reduce water pollution. In...
What information can the reader get by reading this paragraph? A.what kind of pots are best B.why pots need to have holes C.where to buy pots for plants D.how much water plants need 4. Why did the authors w...
How much oxygen is in the Earth's crust? How much oil is in the Permian Basin? How did the Great Artesian Basin form? What is groundwater in the water cycle? How fast does most groundwater move in aquifers? How was the Great Artesian Basin formed?