The "leap second" is designed to allow the Earth's rotation, which is gradually----------to catch up with atomic clocks.
DELAYING
SLOWING
DECLINING
LESSENING
However scientists only get six months ------- of the need to add a leap second.
NOTICE
ADVICE
INFORMATION
INSTRUCTION
------------- systems to fail temporarily.
INFLUENCING
MAKING
COMPELLING
CAUSING
400 flights were grounded as check-in systems ------------ down.
RAN
CAME
FELL
WENT
Some countries are in favour of abolishing the leap second while others ----- that there are many technical challenges.-----.
ARGUE
DISPUTE
QUESTION
DISAGREE
Others argue that challenges are -------------- if the second is added at the same time in all countries.
ADAPTABLE
CONTROLLABLE
MANAGEABLE
GOVERNABLE
The cafe was --------with people.
CRUSHED
PILED
CRAMMED
MASSED
-------------- our live,the Reading Club clears some mental space.
MODERATING
RELIEVING
RELAXING
SIMPLIFYING
The rules of the club are --------- straightforward.
RATHER
SOMEWHAT
EXACTLY
THEREBY
Bring a book and ---------- yourself as you did as a child.
CONCENTRATE
FREE
LOSE
PLACE
Galileo was the first person to ---------- the night sky through a telescope.
REGARD
WATCH
NOTICE
RECOGNISE
Europeans were well aware of the ----------- of glass.
PROPERTIES
MEANS
ASPECTS
RESOURCES
Galileo had highly skilled glassmakers he could ------------ on to provide him with a lens.
HOLD
CATCH
CALL
PICK
Glass lenses were then -------- to many other uses.
PUT
SET
TURNED
TAKEN
It's hard to ------- the impact of this technology on those who could only see a blurred world.
OVERCOME
OVERTAKE
OVERSTATE
OVERDO
From the top of a skyscraper we can---------- the quality of the light but rarely the glass itself.
HONOUR
APPRECIATE
APPROVE
COMPLIMENT
