Lingling: Tim, what is the longest river in the world?

Tim: It’s Nile. It runs through several countries in Africa. What’s the longest river in China?

Lingling : It’s Yangtze River. The Yellow River is very long too, it's the second longest river.

Tim: What’s the highest mountain in China?

Lingling: It’s Mount Qomolangma.

Tim: Oh, it’s also the highest mountain in the world.

Lingling: Yeah.

Tim : Which country is the biggest in the world?

Lingling: Russia. The USA is the second largest and China is the third biggest.

Lingling: For now.(目前是）