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