阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
A
When I worked in Swaziland, one day we went to an orphanage (孤儿院). There we found a beautiful little girl named Tanzile. I gave her a sweet and she said something back to me in Si-swati, which the nurse next to me translated, “She wants another one — to give to her little sister.” I said “of course”. When we were going to leave, we passed by Tanzile’s house to say goodbye. To our surprise she seemed to be holding on to that extra sweet I had given her. I remember saying to the nurse “this little darling is clever — she has taken two for herself.”
But the nurse told us, “Tanzile is 7 now. Two years ago her mum and dad both died of AIDS. She was separated from her sister who was three at the time. Tanzile has not laid eyes on her since. But from then on whenever Tanzile receives anything from anyone, including food — she refus
