In this set of materials, the reading passage mainly discusses about a scientists plan for sending humans to Mars in the future which has some challenging problems about storing humans essential needs, Difficuties can be appearanced for people in the zero-gravity and The Suns radiation which is really harmful for humans, While in the listening passage the professor casts doubt on what is presented in the text. First of all, in the reading passage, it is clearly stated that travel to Mars can take two years that is so long and storing food, water, and oxygen for astronauts is more thanthe ships capacity. However, the professor believes this is not convincing. She claims that there is special method which can be used for space travelling, in this way astronauts use water instead of soil for cultivation that is really useful for them because it needs smaller space than ordinary way, it is appropriate about water recycling, and it can release oxygen that is necessary for astronauts breathing. In addition, the professor disagrees with this idea that being for a long time in space with zero-gravity can harm astronauts muscles and bones. She points out that they can maintain their muscles mass and bones density or at least slow down this process with some particular exercises and eating mineral supplements. Finally, although in the text it is mentioned that spaces radiation could be very dangerous for astronauts and protecting all the ship from radiation could be impossible because it increases the ships weigh so much, the professor subscribes to the view that scientists could build a small shelter for special times that they have radiation attacks because this case is occasionally and they are not faced with it all the time.
In this set of materials, the reading passage
mainly
discusses about a
scientists plan for sending humans to Mars in the future which has
some
challenging problems about storing humans essential needs,
Difficuties
can be
appearanced
for
people
in the zero-gravity and The Suns
radiation
which is
really
harmful for humans, While in the listening passage the
professor
casts doubt on what
is presented
in the text.
First of all
, in the reading passage, it is
clearly
stated that travel to Mars can take two years
that is
so
long and storing food, water, and oxygen for
astronauts
is more
thanthe
ships capacity.
However
, the
professor
believes this is not convincing. She claims that there is special method which can be
used
for
space
travelling, in this way
astronauts
use
water
instead
of soil for cultivation
that is
really
useful for them
because
it needs smaller
space
than ordinary way, it is appropriate about water recycling, and it can release oxygen
that is
necessary for
astronauts
breathing.
In addition
, the
professor
disagrees with this
idea
that being for a long time in
space
with zero-gravity can harm
astronauts
muscles and bones. She points out that they can maintain their muscles mass and bones density or at least slow down this process with
some
particular exercises and eating mineral supplements.
Finally
, although in the text it
is mentioned
that
spaces
radiation
could be
very
dangerous
for
astronauts
and protecting all the ship from
radiation
could be impossible
because
it increases the ships weigh
so
much, the
professor
subscribes to the view that scientists could build a
small
shelter for special times that they have
radiation
attacks
because
this case is
occasionally and
they are not faced with it all the time.