阅读下面短文，掌握大意，然后从每题所给的A、B、C、D 四个选项中选出最佳选项。

Many students like talking about the future world. Today is Sunday. Mike and Peter

1go to school. Listen! They are talking about the life2in the room.

"3will the world be like?" Peter asks. "I think that the world will be a4place to live in. And we will5machines and robots at home. They will help us do lots of6," says Mike.

"The robots will help7cook dinner, clean the houses and8old people. I think there will be a kind of medicine(药)9it can make us live more than 100 years," Peter says.

"What will you do then?" asks Mike.

"Then I will10my great－grandchildren(曾孙) to the moon," says Peter.

"The moon? I will go to the Mars(火星) with my wife," says Mike.