根据“Finally, on April 22,1970,20 million Americans celebrated the first Earth Day!”可知,第一 次地球日是在1970年4月22日,故选A。 (2)B解析:细节理解题。根据“Every year on April 22, people all over the world celebrate Earth Day. It is a time to work to keep our earth clean.”...
题目要求完成句子:“When was China’s first man-made earth s___ launched (发射)?”,每空一词。 1. **第一个空(s___)**: 根据汉语“人造地球卫星”可知,此处应填卫星的英文“satellite”,且首字母为“s”,故填“satellite”补全“s___”部分。 2. **第二个空(发射时间)**: 中国第一颗...
First of all, I noticed that I became much more focused (专注的). Before, while doing something, I would often find myself wondering what was going on online. After a month of staying away from my mobile phone, I found that the ...
By the year 2200, the earth’s water was completely polluted. People could no longer drink water, and they had to use other types of liquids(液体). Scientists said that in the future there might be too many people ...
There was once a time when the great southern landmass of Antarctica was covered in forests and dinosaurs roamed free. How could such an icy wilderness once have been so warm that it could support Earth’s most gigantic creatures?
Yang Liwei was called “China's first astronaut” when he returned to the e___ after his journey into space.相关知识点: 试题来源: 解析 earth 解析:句意:杨利伟在太空之旅回到地球时被称为“中国第一个宇航员”,earth,地球,故答案为earth。 [点评]考查对单词的熟练掌握和运用。理解句意,根据首字母...
When it first came into being 4.5 billion years ago, Earth was a dry rock. So where did all of our water from? Scientists think that it might have arrived in the form of ice by an asteroid (小行星) from outer spe hit our planet. But this ide a has not been confirmed (证明) beca...
When Our Round Earth Was First MeasuredOur Earth is round, although it was not always thought to be that way. It looks flat. But if...Hewit, Paul G.National Science Teachers AssociationThe Science Teacher
When there was more dust coming off the Sahara, geologists know it was drier, with very little vegetation -- like it is today.当撒哈拉有更多尘土时，地质学家就知道那里更干燥，植被稀少——就像现在这样。And if there was less dust, that means it was wetter.而如果尘土减少，那就意味着气候更...
“I know how you did it,” I said, looking him right in the eye. “15,” Marty replied. “But the first law of magic is that…” “It was the fishing line.” Marty became16. He looked a bit worried. Wi...