北師大版高中英語模塊7--Unit 20 workshop5
[00:03.66]of the exploration of Mars?
[00:06.13]In 2014, the first return flight is planned,
[00:09.71]which means that a space probe
[00:11.37]will bring back to Earth samples of Martian
[00:13.86]rock and soil.After that,
[00:16.01]there might be the first crewed flight to Mars.
[00:18.99]At the moment, a manned mission to Mars
[00:20.90]is right at the edge
[00:22.20]of our exploration abilities.
[00:24.19]There are many problems because of the length
[00:26.58]of the return journey
[00:28.02]which would take about two years.
[00:30.01]But a manned flight could explore the planet
[00:32.25]further and even analyse the possibilities
[00:35.15]for human settlement on the planet.
[00:37.42]Who knows? Maybe our grandchildren
[00:39.80]will be living happily on the Red Planet.
[00:42.56]To sum up,in many ways Mars is our new frontier
[00:46.73]Now that we have explored our own planet,
[00:49.19]this beautiful, mysterious, red planet
[00:51.89]remains open to us.
[00:53.61]Let's just hope that we don't make such a mess
[00:56.25]of it as we have done of Planet Earth.
[00:58.44]That's all,thank you.
[00:59.39]
