题干
阅读下列短文，从每小题的三个选项中选出最佳选项。
Hello, I'm Linda. I have a garden. There are some plants and flowers in my garden. I like smelling flowers in it. Look at this small plant. It's a gift from my grandmother. It's for Children's Day. I like it very much. It is small and short. It has two small leaves. I water it every day. The plant grows and grows. Now it is big. It has more(更多) leaves. Now it has three pink flowers. They are beautiful. I like these beautiful flowers very much.
，其中
都是实数，
是虚数单位，则
等于 （ ）
