Scientific Progress

Despite warnings that it might set off a catastrophic chain
reaction that could (54) the Earth, scientists have (55) created a miniature version of the Big Bang,without any observable ill effects. They were able
(56) a temperature of (57) ten trillion degrees - a million times hotter than the centre of the sun -by(58) together lead ions at incredible speeds in
the Large Hadron Collider, a 27 km underground tunnel at the
CERN (European Organization for Nuclear Research) facility
near Geneva.

54 A. to destroy B. destroying C. destroyed D. destroy

55 A. successful B. success C. successfully D. successfulness

56 A.produce B.produced C.to produce D.producing

57 A.the most
B.more much C.more than D.much more

58 A.smashing
B.smashed C.smash
D.to smash

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