{{B}}quEstions 21—23 ArE BAsED on A pAssAgE ABout Cloning. you now hAvE 15 sEConDs to rEAD quEstions 21—23.{{/B}}

whiCh Country pAssED A lAw BAnning humAn CloningA．thE unitED stAtEs.
B．thE unitED kingDom.
C．switzErlAnD、
D．russiA、