Standing desks have become common across Silicon Valley, offering health benefits to those willing to work on their feet. However, due to their high price, they have failed to catch on until now. Recently, Ikea has brought out Bekant convertible（可改变的）standing desk that can become a normal desk at the touch of a button. The $500 adjustable desk can transform from a standard desk to a standing one, and Ikea hopes it could make the standing desk mainstream.
Experts say that changing from a seated to a standing desk can improve productivity. Similar desks have become a common sight at tech firms such as Google, where some employees have even installed treadmill (跑步机)and bicycle desks.
The desk is not the first “convertible” on the market. As early as 2013, Stir Kinect brought out an adjustable desk. The $3,890 Stir Kinect desk has a motor to raise and lower itself, converting it into a standing desk or a traditional desk. The desk can even be programmed to move up and down slightly, making it appear to take a gentle breath to remind the user to change their position. To move between sitting and standing positions, owners simply double tap on the screen. The desk can learn the user’s preferences over time and suggest the best seating position.
The Stir Kinect desk was created by a team of ex-Apple and Disney engineers. It has a built-in touch screen to control and track movement, and can tell users exactly how many calories they burn by standing during their working day. It also has devices containing power points and USB ports for charging phones, to keep cables hidden.
“Ikea’s height adjustable desk is great for opening up the lower end of the market, ’’ said JP Labrosse, founder and CEO of Stir.
What is the text mainly about?

A．Ikea has brought out an adjustable standing desk.

B．Silicon Valley offered health benefits to officials.

C．Google formed their tech firms to design bicycle desks.

D．The Stir Kinect desk will become mainstream in the market：

Which of the following is TRUE according to the text?

A．Before Bekant desk, similar adjustable desks have been widely used.

B．The seated desks will take the place of the standing desks in the future.

C．Compared to the Stir Kinect desk, the Bekant desk is much cheaper.

D．The adjustable desks were designed by the Apple and Disney Company.

The Stir Kinect desk______.

A．can breathe in and breathe out by pressing the button once.

B．can charge phones by using a device containing power point.

C．can tell you how many calories you need for a walk

D．can advise you to do more exercise at a proper time

What can we infer from the last sentence given by JP Labrosse that______.

A．Ikea’s adjustable desk will be popular with average people.

B．Ikea will have to sell furniture at a lower price in the future.

C．This height adjustable table can only be found in Ikea.

D．It is not necessary for Ikea to open up the market at all.