哈工大考博英语真题以及答案Word格式.docx
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ago
from
magmatic
fluids
that
originated
molten
granitelike
bodies
deep
beneath
surface
Earth.
This
theory
is
contrary
widely
held
view
deposited
metamorphic
fluids,
is,
that
formed
during
dehydration
wet
sedimentary
rocks.
The
recently
developed
theory
has
considerable
practical
importance.
Most
gold
deposits
discovered
the
original
rushes
exposed
at
Earth’s
and
found
because
they
had
shed
trails
alluvial
easily
traced
by
simple
prospecting
methods.
Although
these
same
methods
still
leas
an
occasional
discovery,
most
not
yet
have
gone
undetected
they
buried
no
surface
expression.
challenge
in
exploration
therefore
unravel
subsurface
geology
an
area
pinpoint
position
minerals.
Methods
used
today
include
analysis
aerial
images
yield
broad
geological
overview,
geophysical
techniques
provide
data
magnetic,
electrical,
mineralogical
properties
rocks
being
investigated,
sensitive
chemical
tests
able
detect
:
subtle
halos
often
envelop
mineralization.
However,
none
high-
technology
any
value
if
sites
which
applied
never
mineralized,
maximize
chances
discovery
explorer
must
pay
particular
attention
selecting
ground
formations
likely
be
mineralized.
Such
selection
relies
varying
degrees
conceptual
models,
take
into
account
theoretical
studies
relevant
factors.
These
models
constructed
primarily
empirical
observations
known
mineral
theories
ore-forming
processes.
uses
identify
those
features
critical
formation
mineralization
modeled,
then
tries
select
areas
for
exhibit
as
many
possible.
1.
author
concerned
with.
A.
advocating
return
older
methodology.
B.
explaining
importance
theory.
C.
enumerating
differences
between
methods
D.
describing
events
leading
discovery
2.
passage,
held
vein
such
systems
A
fluids.
B
granitelike
bodies
C
deposits
D
generally
expression
3.
passage
implies
steps
would
first
performed
explorers
whowish
their
discovering
gold?
Surveying
several
known
been
more
than
billion
ago.
Limiting
form
metamorphic
fluid.
Using
appropriate
model
site
further
exploration.
analyze
rocks
area.
4.
Which
statements
about
discoveries
gold
supported
information
passage?
number
discover
made
annually
increased
time
of
present
New
result
exploration
techniques
designed
locate
mineralization
It
unlikely
newly
will
ever
much
did
rushes.
Modern
divided
question
utility
simple
source
new
deposits.
5.
can
inferred
easiest
to
detect?
system
originating
magma
tic
deposit
mixed
with
granite.
gold.
6.
mentioned
line
I
relates
discussed
ways?
may
furnish
valid
processes,
hence,
can
support
great
significance.
suggests
certain
formations,
long
believed
mineralized,
fact
mineralized
thus
confirming
current
models.
there
enough
similarity
across
gold-
quartz
warrant
formulation
corrects
existing
deposits,
and
provides
basis