Outside
Seville
,
the
____________________
are
building
a
new
golden
tower
surrounded
by
six
hundred
reflectors
,
each
one
half
the
size
of
a
tennis
____________________
.
They
behave
like
sunflowers
,
naturally
following
the
arc
of
the
____________________
across
the
____________________
.
Focusing
the
sun's
____________________
to
a
single
point
all
day
long
,
the
intense
heat
turns
water
to
____________________
that
generates
more
than
20
gigawatts
of
____________________
a
year
.
And
when
all
nine
solar
towers
are
complete
,
they
will
provide
enough
electricity
to
power
the
whole
city
of
____________________
day
and
____________________
.
