阅读对话，根据上下文补全对话，使对话完整。每空限填1个单词。

Peter: Hi, Sally. Come and have a look at my photos.

Sally: Are these the photos you took in Africa, Peter?

Peter: Yes, 1    are. Look, this is a wildebeest. It’s an animal in Africa.

Sally:  2   it eat meat?

Peter: No, it doesn’t. It only eats grass.

Sally: Are there a lot of animals in Africa?

Peter: 3  ,there are many.

Sally: Oh, this photo looks interesting. What are you doing there?

Peter: I 4  riding the elephant.

Sally: Did you have a good time there?

Peter: Of course. I really enjoyed 5  .

下面程序的运行结果为
　　#include ＜iostream．h＞
　　void swap(int ＆a，int b)
　　
　　　　int temp；
　　　　temp=a++；
　　　　a=b；
　　　　b=temp；
　　
　　void main(　)
　　
　　　　int a=2，b=3；
　　　　swap(a，b)；
　　　　cout＜＜a＜＜"，" <

A．2，3

B．3，2

C．2，2

D．3，3