A planet called Kepler 22b was discovered!It is supposed to be an ideal home for future human. It has both land and water and has temperatures which average around 72degrees. It also has the right atmosphere to support life. But it is 600 light years from the Earth. ...
Kepler-22a.C. Kepler-22b.19. How long is the planet's year?A. About 41 weeks.B. About 52 weeks.C. About 55 weeks.20. What can we learn from the text?A. T he planet is made mostly of rock and gaS.B. T he planet orbits a star like our sun.C. T hose so called super-...
2. The following picture is from NASA 3, which shows the Goldilocks Zone around Earth and an extrasolar planet known as Kepler 22b. As you can see from the image, both Mars and Earth are in the zone, but life as we know it only exists on Earth. Venus misses out on being in the...
A water-covered planet facing a water crisis seems paradoxical. And yet that is exactly the reality on planet Earth,where 97 percent of the water is too salty to quench human thirst or to irrigate crops. Tackling water-shortage issues with desalination—drawing fresh,drinkable water out of ...
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《Blue Planet》 蓝色星球 Blue Planet We all have a common home. She provides us with enough food, enough water and enough living room. We get everything from nature to live better, but we don't do anything to protect her. Now the air is polluted,the earth is poisoned, ...
A.how to control global warmingB.why the Earth has so many problemsC.what we can do to protect the EarthD.when other resources will be used up答案(1)细节理解题。根据Global warming is a very big problem in the world.(全球变暖是世界上一个非常大的问题。)Another...
Caina has the world’s fourth largest amoount of water.With so many people,China does not have enough water for everyone.To make things worse,people waste a lot of water.They use it inefficiently when they water crops.They waste a lot.Also,dirty water from factories goes into rivers and...
3.of the surface of our planet is covered by water?A.How many percent B.How much percentC.What percentD.What percentage3.___of the surface of our planet is covered by water? A.How many percent B.How much percent C.What percent D.What percentage 相关...
1The earth is a rocky planet where there is liquid water, which is necessary for life (exist). 2The earth is a rocky planet where there is liquid water, which is necessary for life (exist). 3 6. The earth is a rocky planet where there is liquid water which is necessary for life ...