52._________A.. aggressionB. anxietyC. pressureD.

_____uses one or two high pressure pumps for all the cylinders with one more____ standby, while______have a separate high－pressure pump for each cylinder.

Stress and______are symptoms of life in modern society.A．leisureB．anxietyC．nervousnessD．em

_________(57)A.pressure B.restraintC.load D.weight

______(50)A.There’s more pressure to get married

______(49)A.There’s more pressure to get married

______(48)A.There’s more pressure to get married