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Consolidation

9. While researchers thought that a huge dust blob 13. As transportation is ---- factor affecting our physical
travelling with comet 108P/Ciffreo ---- a separate and mental health and the air we breathe, the
object at first, later other scientists suggested it ---- engineering industry works on new transportation
particles launched off the comet. systems in order to make commuting healthier and
---- environmentally damaging.
A) must be / might be
A) a significant / less
B) used to be / would have been
B) more significant / the most
C) could be / might have been
C) the most significant / more
D) can be / may be
D) a more significant / the least
E) would be / will be
E) significant / little

10. An autonomous vehicle ---- without human 14. Not only has the global population more than
intervention, and a human passenger ---- to control doubled in the last 50 years, but the average person
the car at any moment or even to be inside the today consumes nearly twice ---- much seafood ----
vehicle at all. they did half a century ago.
A) has been operated / does not require A) so / that

B) operates / has not required B) so / as
C) is operated / is not required C) as / as
D) is operating / is not going to be required D) such / that
E) is being operated / will not be required E) more / than

11. Although wheat and rice ---- in much greater numbers 15. Children learn ---- when they are actively engaged
around the world, oat ---- significant attention in with their surroundings and try a variety of activities,
recent decades due to its high content of dietary so playing in a secure and fun atmosphere makes
fibres, phytochemicals, and nutritional value. this process ---- easier for them.

A) have been consumed / attracts A) well / more
B) are consuming / has been attracted B) better / by far
C) consume / is attracting C) the best / a lot
D) will be consumed / has been attracting D) good / a bit

E) are consumed / has attracted E) best / much

12. Unlike other renewable energy sources, such as 16. Particularly in cities, there is an overwhelming
wind and solar electricity, geothermal energy ---- as amount of traffic, and people almost compete with
a dependable and consistent energy source as it ---- ---- while travelling ----.
by day or night.
A) each other / nowhere
A) has been viewed / will not affect
B) other / anywhere
B) is viewed / is not affected
C) other one / anytime
C) has viewed / has not been affected
D) one another / somewhere
D) will be viewed / is not affecting
E) the others / every time
E) views / does not affect

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