B．efore relativistic particle physics, the constituents of matter had always been considered as being either elementary units which were indestructible and unchangeable, or as composite objects which could be broken up into their constituent parts;

[单选题]I have a lot of readings _____ before the end of this term.A． completingB． to completeC． completedD． being completed

[单选题]( )Virus Security Software is designed to detect， eliminate or quarantine c

[试题]The fact that the mass of a particle is equivalent to a certain of energy means that the particle can no longer be seen as a static object, but has to be conceived as a dynamic pattern, a process involving the energy which manifest itself as the parti

[试题]Physicsis_________tothesciencewhichwascallednaturalphilosophyinhistory.A．)alikeB)equivalentC．)likelyD)uniform

[试题]（50）These processes of particle creation and destruction had been predicted from Dirac’s theory before they were actually discovered in nature, and since then they have been observed millions of times.

[试题]In classical physics, the mass of an object had always been associated with an indestructible material substance, with some “stuff” of which all things were thought to be made.

[单选题]The experiment in physics is Prof Strong．__________A．in’charge ofB．taking charge ofC．in the charge ofD．taking the charge of

[名词解释] 病毒粒子（病毒个体virus particle）

[单选题]On 8th November 1974Lord Lucan,a British aristocrat,vanished.The day before

[单选题]On 8th November 1974Lord Lucan,a British aristocrat,vanished.The day before