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