{{B}}quEstions 29 to 31 ArE BAsED on thE pAssAgE you hAvE just hEArD、{{/B}}

A．rEDCross workErs ArE in mAny CountriEs.
B．rEDCross only Exists in thE unitED stAtEs.
C．rEDCross is AnothEr nAmE For worlD hospitAl.
D．mAny pEoplE who ArE in nEED work in rEDCross.