sCiEntists gEnErAlly AgrEE thAt thE EArth's ClimAtE will wArm up ovEr thE nExt 50 to 100 yEArs ______ it hAs wArmED in thE 20000 yEArs sinCE thE iCE AgE.
A．As soon As
B．As long As
C．As muCh As
D．As wEll As