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请写一篇3分钟的英语演讲稿

发表时间:2024-07-12 19:47:35 来源:网友投稿

火星上的生活

1.我们的行星地球正变得越来越拥挤,越来越受污染;我们可望重新开始,在火星上建立一个更好的家园;

2.首先交通应当好得多;很快,航天飞机的速度将达到光速的一半;

3.人类要生存,就需要食物.水和空气;科学家希望使植物发展,能在火星上种植,以产生我们需要的食物和氧气;但是,还不能确定它们是否能产生水;

4。火星上的重力只相当于地球上的3/8,人们在火星上得穿上特制的靴子,以增加重量。

Our

own

planet,Earth,is

becoming

more

and

more

crowded

and

polluted.Hopefully,we

can

start

again

and

build

a

better

world

on

Mars.First

of

all,transport

should

be

much

better.In

a

very

short

time,space

shuttles

will

travel

at

half

speed

of

light.Humans

meed

food,water

and

air

to

survive.Scientists

hope

to

plants

that

can

grow

on

Mars.These

plants

will

produce

the

food

and

oxygen

that

we

need.However,it

is

not

certain

if

these

plants

will

be

able

to

produce

water

.The

gravity

on

Mars

is

only

about

three-eights

of

the

gravity

on

Earth.Humans

on

Mars

would

have

to

wear

special

boots

to

make

themselves

heavir.

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