伊卡莱姆的ScalersTalk第四轮新概念朗读持续力训练Day218L55-1 20190513

练习材料：

L55-1: From the earth: Greetings

Recent developments in astronomy have made it possible to detect planets in our own Milky Way and in other galaxies.

This is a major achievement because, in relative terms, planets are very small and do not emit light. Finding planets is proving hard enough,

but finding life on them will prove infinitely more difficult.

The first question to answer is whether a planet can actually support life.

In our own solar system, for example,

Venusis far too hot and Mars is far too cold to support life.

Only the Earth provides ideal conditions,

and even here it has taken more than 4 billion years for plant and animal life to evolve.

Whether a planet can support life depends on the size and brightness of its star, that is its 'sun'.

Imagine a star up to 20 times larger, brighter and hotter than our own sun.

A planet would have to be a very long way from it to be capable of supporting life.

应用配置：L0+L4

知识笔记：astronomy/əˈstrɑnəmi    detect/dɪˈtɛkt    achievement/əˈʧivmənt    solar/soʊlər    Venus/vinəs

练习感悟：用时54分。早上起床晚，推到晚上临睡前一小时做今天的作业。录了几遍，最后一遍才感觉还行。