题目

    Once I had the opportunity to play the character of Ronald McDonald for the McDonald’s Corporation. One __1__event was “Ronald Day”. One day each month, we visited some hospitals, bringing a little __2___to people there.     I was __3__to visit people who were experiencing some “down time”. The warmth and __4__ I received would stay with me for weeks. I __5__ the event.     There were two __6__during a visit. First I couldn’t go anywhere in the hospital without permission. Second, I could not __7__anyone there. It might transfer(转移) germs(病菌) from one下列杂交组合的后代会出现3∶1性状比的亲本组合是A.EeFf×EeFfB.EeFf×eeFfC.Eeff×eeFfD.EeFf×EeFF