内容正文:
重组卷01-冲刺2021年高考英语之精选真题+模拟重组卷(新高考地区专用)
(考试时间:100分钟 试卷满分:120分)
注意事项:
1. 答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。
2. 回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其他答案标号。回答非选择题时,将答案写在答题卡上,写在本试卷上无效。
3. 考试结束后,将本试卷和答题卡一并交回。
第一部分 阅读 (共两节,满分50分)
第一节 (共15小题;每小题2.5分,满分37.5分)
阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。
A
Unsolved Mysteries About the Planet Earth
Mystery 1: Where did water come from?
Water covers more than 70 percent of the Earth's surface and that makes the Earth earn the nickname " the blue planet " . Then where di water come from? The most popular scientific theory states that the H2came from several violent asteroids(小行星)covered with ice.Anothe suggests that the water actually has been around since the Earth's formation However it happened, though, it's certainly worked out well for the Earth life forms.
Mystery 2: What about all the oxygen?
Another thing is the planet's oxygen. Tiny creatures released oxygen as a waste product , filling the atmosphere with it . After that , the level of oxyge in the Earth's atmosphere went wildly up and down until it finally calme down around 540 million years ago. Since then, it's remained at about the breathable level we know today. But what caused it to be suddenly steady?
· Mystery 3:What caused the Cambrian(寒武纪)Explosion?
The Cambrian Explosion refers to the explosion of complex life forms that occurred on Earth about 540 million years ago. Before then, life had consisted mostly of microbes. But at the beginning of the Cambrian period complex creatures began developing at a rate never seen before. Suddenly,life forms had brains, eyes, and bones. Most living creatures today can trace their blood back to the Cambrian period.
Mystery 4: Will we be able to predict earthquakes?
We still haven't been able to come up with a way to accurately predict earthquakes. We can certainly try, but our current technology cannot predict them exactly. We know that earthquakes start when the rock cracks underground and the enormous energy released