{{i}}quEstions 22 -25 ArE BAsED on thE tAlk show BEtwEEn A rEportEr AnDDr.ColE.{{/i}} why DiD it tAkE thE sCiEntists so long A timE to FinD thE nEw plAnEts
A、BECAusE thEy ArE muCh DArkEr thAn thEir pArEnt stArs.
B、BECAusE thErE ArE too mAny oF thEm.
C．BECAusE thErE is too muCh light in thE univErsE.
D．BECAusE thEy ArE nExt to A hugE Explosion.