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，并在答题卡上将该项涂黑。
A
Why do 33% of the households in the USA have cats? And how do you explain why there are 16 million more pet cats than dogs? Yes, kittens are adorable （讨人喜欢的）．Yes, they can grow up to be good mousers and are very entertaining to watch．And yes, cats are independent and don't require as much care as dogs．But research shows cats can also be caretakers for us and our families, improve our health and teach us and our children to be kinder, gentler souls．
Theodora Wesselman is 94 and has lived the past two years with her elderly cat, Cleo, at TigerPlace, a retirement community in Columbia, Mo．Their enduring friendship is a classic example of how humans and animals can become family and look out for each other．
