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.
ADVICE
INFORMATION
NOTICE
INSTRUCTION
------------- systems to fail temporarily.
CAUSING
INFLUENCING
MAKING
COMPELLING
400 flights were grounded as check-in systems ------------ down.
WENT
RAN
CAME
FELL
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.
CONTROLLABLE
GOVERNABLE
MANAGEABLE
ADAPTABLE
The cafe was --------with people.
MASSED
CRUSHED
CRAMMED
PILED
-------------- our lives,the Reading Club clears some mental space.
MODERATING
RELIEVING
RELAXING
SIMPLIFYING
The rules of the club are --------- straightforward.
THEREBY
RATHER
EXACTLY
SOMEWHAT
Bring a book and ---------- yourself as you did as a child.
FREE
LOSE
CONCENTRATE
PLACE
Galileo was the first person to ---------- the night sky through a telescope.
RECOGNISE
WATCH
NOTICE
REGARD
Europeans were well aware of the ----------- of glass.
RESOURCES
MEANS
ASPECTS
PROPERTIES
Galileo had highly skilled glassmakers he could ------------ on to provide him with a lens.
CATCH
PICK
CALL
HOLD
Glass lenses were then -------- to many other uses.
TAKEN
SET
TURNED
PUT
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
APPROVE
APPRECIATE
COMPLIMENT
