The earth is covered by water. All lives on the planet (行星,地球) need water. 1 To keep the water clean, we mustn’t throw litter into the sea, rivers, or lakes. We can also use machines to make the water clean. 2 Here are some reasons. Firstly, clean water is useful for...
【题目】DWater shortages on planet Earth? It seems impossible, Inages ofour planet from outer space show vast oceans, lakes as big as smuallcountries, and wide rivers flowing with incredible volume, How canthere not be enough water? But the fact is that the world is facing thepossibility ...
may be found on exoplanets within what is known as the Habitable Zone (HZ) of their respective star, given the planet has a suitable atmosphere. For example, the HZ of our sun extends roughly between the orbits of Venus and Mars. However, both these planets do not ...
绘本阅读文本材料:We live on the planet Earth. It is made up of water, land, and air. They are all important to us. Pollution occurs when something harmful is added to the water, land,or air. Pollution hurts our planet. How can we stop pollution and help keep the Earth clean?
Mars has water trapped in the polar ice caps. More water may lie just beneath the surface. A new study suggests that water also flows on the surface.
根据前文People call Earth the"water planet".That's because the ocean (海洋) covers over 70 percent of Earth.(人们称地球为"水星球"。这是因为海洋覆盖了地球的70%以上。)可知,海洋是很重要的,所以C项"海洋非常重要。"符合语境。故选C。(2)细节推理题。根据前文The ocean is like Earth's lungs (...
And when more quickly renewed sources can't meet the demand, we start pumping it out of our finite underground reserves. Of Earth's 37 major underground reservoirs, 21 are on track to be irreversibly emptied. So w...
First Discovery of Water on MarsPublished on July 31, 2018 by Sarah Taken by NASA’s Phoenix Mars Lander, this combines more than 400 images of the Red Planet’s northernmost region. Exploring the universe is a step toward understanding the vast space surrounding Earth. One of our neighboring...
Water on Mars 火星上的水 体裁 说明文 难度 ★★★ There are certain areas on Mars where we don't dare tread. NASA forbids spacecraft from visiting spots that possibly host liquid water,and so where life might be able to thrive,for fear of contaminating Mars with Earth microbes. But an ...
Is Earth as smooth as a billiard ball? No, here's why Largest great white sharks ever recorded Top 10 largest fish species Top 10 Largest Insects on Earth Astronomy Solar System Climate Global Warming Planet Earth Geography Geology Mountains ...