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Aerogels are the lightest solid materials in
existence
occurence
presence
life
They are gels (like hair gel) in which gas has been
relieved
substituted
changed
replaced
They have unique ...... that have still to be exploited.
properties
possessions
belongings
contents
They have unique properties that have still to be exploited to the
total
extent
full
entirety
Air can .................... as much as 99.8% of the material.
build up
put in
fill in
make up
A flower placed on aerogel held over a Bunsen burner will be ... by the heat.
unconcerned
uninfluenced
unaffected
unimpressed
Aerogels have considerable ............ for use in the construction industry.
ability
capacity
possibility
potential
They will be particularly helpful in the building and construction .....
region
division
sector
category
Its use is currently limited, mostly to drilling operations and other .... environments.
immoderate
intense
excessive
extreme
Getting a job is .... important to leave to chance.
very
such
so
too
I don't want to come to the party. ............ all, I don't know the guy.
Before
Above
After
Over
Concentrate on jobs for ..... you have an aptitude.
what
which
that
whose
Some companies are ..... obsessed with profits that employees are under a lot of stress.
Some companies are so obsessed with profits that employees are under a lot of stress.
CIVILISE A number of ....... existed in different parts of Mexico.
A number of civilisations existed in different parts of Mexico.
KNOW The Olmecs are virtually ..... now, but they flourished for over a millenium.
The Olmecs are virtually unknown now, but they flourished for over a millenium.
INHABIT It's a very instructive guide to these early ...........
It's a very instructive guide to these early inhabitants.
