根据课文内容可知,水是有用的(形容词 usefu l),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 clea n)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...
上water, often because. how, planet. warni.earth, clean, difficult, they, possible Astronauts have lots of important work to do in space. They must stay healthy to do a good job. Part of staying healthy is keeping (51)But how do astronauts wash themselves in space?Can they take a sho...
If Earth’s water wasn’t formed along with the Earth, then, planetary scientists suspect, it must have been delivered later via extraterrestrial messenger. Bothasteroidsandcometsvisit the Earthandare known to harbor ice. (Not sure of the difference between an asteroid and a comet? Check out m...
13. Is water necessary for all life in the universe, or just on Earth? 水是宇宙中所有生命所必需的么,还是仅对地球生命? 14. What is preventing humans from carrying out deep-space exploration? 是什么阻止了人类进行深空探测? 15. Is Einstein's general theory of relativity correct? 爱因斯坦的广...
13. Is water necessary for all life in the universe, or just on Earth? 水是宇宙中所有生命所必需的么,还是仅对地球生命? 14. What is preventing humans from carrying out deep-space exploration? 是什么阻止了人类进行深空探测? 15. Is Einstein's general theory of relativity correct?
You do not need to buy a new pot. Look around your house. You can use a can or plastic container. You will want to choose something with holes at the bottom. This way, extra water can drain out. If a plan...
That is why light from the sun and distant stars can travel through space to the earth! Soils There are many different kinds of soils. Different soils have different types of rock and minerals in them. Some soils have more water in them than others. Some soils might have more plant and ...
From space,the earth looks blue.This is about seventy-one percent of its surface is covered by water.( ) A. why B. how C. because D. whether 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 答案:C Why为什么;how怎样,如何;because因为;whether是否.Why在引导表语从句时强调...
Does the glass leak(漏)? No,water vapor in the air turns into water when iMillions of water drops come together in the sky. T hey _9_ clouds. Wind moves clouds. And the water vapor in clouds cools off and changes to water. T hen the water _10_ tothe earth. Rain falls back ...
"Just as how a lotus leaf can let the water drops slip, such material makes it easier for the dust to be blown off." Zhurong's solar wings are also equipped with directional sun-tracking capability which enables the rover's wings to shift as the sun rises, like those...