中考英语考前阅读理解强化训练

1. Unless we spend money to spot(认出，发现) and prevent asteroids(小行星) now, one might crash into Earth and destroy life as we know it, say some scientists.

Asteroids are bigger versions of the meteoroids(流星体) that race across the night sky. Most orbit the sun far from Earth and don t threaten us. But there are also thousands of asteroids whose orbits put them on a collision course with Earth.

But $500 million worth of new telescopes right now, then spend $10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we ll have a way to change its course.

Is it worth it? Two things experts consider when judging any risk are (i) How likely the event is; (2) How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500,000 years. Sounds pretty rare but if one did fall. It would be the end of the world. If we don t take care of these bid asteroids, they ll take care of us, says one scientist. it s that simple.

中考成绩查询 中考分数线 2024中考 www.99yikao.com 中考百科报考：中考资讯 中考政策 中考体育 志愿填报资源检索：2024中考真题 中考满分作文 中考英语作文 www.99zihua.cn

　　初中英语：复数形式的单数名词

　　初中英语：名词的所有格

　　初中英语：复数形式的单数名词

　　初中英语： 不可数名词

　　www.99zihua.cn

　　初中英语：常以复数形式出现的名词

　　初中英语：可数名词的复数规则变化

　　初中英语：可数名词的复数不规则变化

　　初中英语：可数名词的特殊的复数形式

　　www.99yikao.com

　　初中英语语法知识点：所有格形式的构成

　　初中英语名词语法知识点：名词双重所有格的形式

　　初中英语名词知识点：名词作定语形式及特点

　　www.gaokao2024.com

　　初中英语语法知识点：名词的用法内容概述

　　初中英语语法知识点：名词性从句应注意的问题

　　初中英语语法知识点：动名词作定语

　　初中英语语法知识点：动名词作宾语

http://m.99zihua.cn/a/208907.html 中考英语考前阅读理解强化训练 中考英语