5 billion years ago" " The team of researchers analyzed seven melted meteorites that crashed into Earth during billions of years in our solar system.”可知.研究者通过分析熔化的 陨石来进行研究。 故选B. 3.D 细节理解题 由"This led them to conclude that water was likely delivered to Earth ...
measured outside the Earth."和第三段中的“These results, which...of the Earth's water"可知,研究人员通过熔化的 陨石证明了它们不可能是地球上水的来源。 故选B项。 7.A 细节理解题。 根据倒数第二段中的“Scientists of many fields...connections with life.”可知,地球上的水这一课题 很吸引科学家...
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My mother put the bucket in the sink and then turned the water in the water and the water ran down. But my mother was so busy with the dishes that she didnt turn off the water. At this moment, the small army saw, hurriedly ran to the mother to say: mother, mother, quickly turn ...
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...
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 not too much energy. We should not...
It is then cooled down and falls back to the lunar surface, forming beads (珠子) of glass. The Chang’e 5 probe, which returned to Earth on Dec 17, 2020, brought back a total of 1,731 grams of rocks and soil from the lunar surface, including glass beads, reported Xinhua. The ...
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...
the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be done at normal speed again and during this time you should check your work. 听力原文: Sunrise, Sunset Has it ever seemed to you like sunsets take longer than sunris...
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...