题目内容：

    Looking out across the city and on top of the tall buildings before you are cows. Yes, you read that right. Farm animals are eating grass on high-rise urban farms on top of high buildings in London. Elsewhere, off the coast of mainland England, against the background of extremely beautiful White Cliffs of Dover, a wonderful pod (吊舱) structure forms part of floating city. This is how we will live 100 years from now — if a group of UK experts to be believed.

Temporary housing pods, underwater cities and 3D-printed houses will also help reduce the burden of overpopulation and inner city living-space shortages. Building with their own microclimates and cities built in the skies are also among the amazing achievements of future engineering predicted by experts.

But not only today’s architects continue to advance towards the clouds, building higher and higher, as engineering advances allow, but we’ll also be headed deep below ground. Meanwhile, the future will feature city-spanning (跨城市) bridges. Want to travel to Mars quickly? No problem — the experts are predicting spaceports (宇航基地) will become common places, so future generations will be able to head over to their local station and hitch (搭顺风车) the next ride.

The predictions were heavily focused on water - based architecture and present problems such as overpopulation, global warming and rising sea levels. Using the future tech predictions, 2,000 people were then surveyed to see which of the suggestions they thought — and hoped — would become a reality by 2115. Topping the survey was super-deep basement buildings complete with hotels, restaurants, green space, swimming pools and gyms. The survey also found that one in three respondents (调查对象) considered floating sea cities — which could use solar and tidal (潮汐的) energy — as a choice for future development.

1.The first paragraph is meant to ______.

A.present the topic B.make a comment

C.give an example D.draw a conclusion

2.The second paragraph mainly talks about ______.

A.different kinds of building structures.

B.recent development of building structures.

C.means to control the increase of population.

D.future building structures helping to solve the lack of living space.

3.The underlined phrase “local station” refers to ______.

A.air station B.traveling agency

C.spaceport D.traveling destination

4.What did people surveyed consider most practical?

A.City-spanning bridges B.Deep underground buildings

C.Floating sea cities D.slightly-deep basements