题目内容：

    A company called Compass Pools has some good news for height and swimming enthusiasts.Recently, the company announced their novel design-a first of its kind 360-degree pool which is set to be placed on a skyscraper in London.The Infinity London will be the first and only building in the world to include this cutting-edge pool design. The pool will be laid on top of a 55-story skyscraper and will allow people to float over 200 meters above the London skyline with unobstructed（无障碍）views of the city.

The entrance to the pool is hidden.People began to raise questions about how anyone would get inside the pool. Compass Pools explains: "Swimmers will access the pool through a rotating spiral（螺旋）staircase based on the door of a submarine, rising from the pool floor when someone wants to get in or out."

But that is not the only unique technology of the pool.The designers found a way to make sure the wind doesn't blow the water down to the streets.They included a built-in anemometer（风力计）to monitor the wind speed. It is linked to a computer-controlled building management system which will also take care of the temperature of the water.

Alex Kemsley promises that this unique pool will surpass expectations."Swimming in the SkyPool at The Shard，it's quite a strange feeling to have helicopters flying past at your level but this pool takes it a step further," he says."Putting your goggles（防水镜）on and with a 360-degree view of London from 220m up, it really will be something else-but it's definitely not one for the acrophobic（恐高）!"

While the exact date of the construction is not clear yet, if things go well, it may begin in 2020.The location has yet to be confirmed too.

1.What can we learn from the first paragraph? ______

A.The Infinity London is the only building to swim in. 

B.Swimmers can enjoy the views of London in the poo1.

C.The pool is located on the first floor of a skyscraper. 

D.Compass Pools has built many 360-degree pools in the world. 

2.What does the underlined word "that" in Paragraph 3 refer to? ______

A.The pool floor.   B.A built-in anemometer. 

C.The door of a submarine.   D.The entrance to the poo1. 

3.Who might not be suitable to swim in the SkyPool? ______

A.People who enjoy flying.   B.People who lose weight. 

C.People who fear heights.   D.People who have poor sight. 

4.What can we know about the SkyPool at The Shard? ______

A.It is not certain when people can swim in it. 

B.Its exact location of the construction is clear. 

C.Swimmers can expect its designs easily. 

D.It's impossible to monitor the temperature of the water.