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全国100所名校最新高考模拟示范卷。cameras,the researchers found that it reached a speed about 20 times faster than the blinkan eye,.This“rotational(旋转的)acceleration”was nearly three times greater than the previous reord for humans,set by a professional baseball playerThe research,published in theof theRoyl Socityeface,divides the fingersnapinto three stages.First,force is first built up by pressing the thumbandmiddltogether.This appears to be stored in springlike muscle in the fingers and forearmF(摩擦力)between the two fingers acts like a latch(门闩)，preventing the energy from beingreleased.Eventually,an "unlatching"process begins,with the thumb moving sideways andthe middle finger quickly sliding past the thumb,starting the snap motion.The middle fingerthen slips into the palm,generating shockwaves that result in a"pop"sound.The study was inspired by the Hollywood movie Avengers:Infinity War and the character Thanos,who destroys half the universe by snapping his fingers.He does this while wear-ing a metal glove.When they saw this scene,Dr Saad Bhamla,the leading researcher,and hiscolleagues asked themselves if this was possiblecould you snap your fingers while wearing ametal glove?They explored the role of friction by covering fingers with different materials,includingmetallic thimbles(金属套管)，which reduced friction.The researchers concluded that a"Goldilocks zone"of friction was necessary.Too little friction and not enough energy wasstored to power the snap.Too much friction led to displacement of energy as the fingers tooklonger to slide past each other,"wasting"the stored energy as heat."Our results suggest thatThanos could not have snapped because of his metal armoured fingers.So,it's probably theHollywood special effects,rather than actual physics,at play,"said Bhamla.12.What can we learn from paragraph 1?A.The finger snap is the fastest acceleration of our body.B.The blink of an eye is faster than a finger snap.、英语卷（七）、第6页（共12页）【22·MNJ·英语·YNGZGS】
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