题目内容：

    In between all the measures to battle the severe air pollution in Delhi, India, there’s one more option----a bar that has “pure air”.

Founded by Aryavir Kumar, Oxy Pure, Delhi’s first-ever oxygen bar, offers 15 minutes of 80-90 percent pure oxygen, costing Rs 299 ($4.2). Customers are given a lightweight tube for oxygen intake. The device (装置) is placed near the customers’ noses through which they are advised to breathe in the oxygen.

The bar also offers its customers several aromas (气味) to go with oxygen, including lemongrass, cherry and more. According to the aroma people choose, each session promises to improve sleep patterns and digestion, cure headaches, and even work as a treatment for depression (抑郁).

Bonny Irengbam, a senior sales assistant at the bar, said, “Some people, who try it for the first time, will feel relaxed and fresh. But only people who do this regularly will get real benefits. By regularly, I mean once or twice a month. We don’t encourage back-to-back sessions, as increased levels of oxygen in the body can make a person dizzy.”

Dr. Rajesh Chawla, a senior doctor at the Indraprastha Apollo Hospital, said, “Even if you breathe in the so-called pure oxygen for two hours in a day, you will go back to breathing the polluted air for the rest of the 22 hours. The concept is purely money-driven.”

Recalling the first few months of the bar, Irengbam admitted that people were skeptical. “Many people criticized, saying we were selling air. Others were simply scared to breathe through the tube.”

Irengbam said the bar saw a significant rise in the number of customers two to three days after Diwali, an Indian festival mainly celebrated by fireworks and lights, as the pollution levels were high.

1.What do we know about the oxygen intake?

A.It was not well-received at first. B.It will always cause side effects.

C.It surely has a promising future. D.It can cure people of depression.

2.Which of the following can replace “back-to-back” in Paragraph 4?

A.Once — a — month. B.Once — in — a — while.

C.Once — and — for — all. D.One — after — another.

3.What is Dr. Rajetha Chawla’s attitude towards the bar?

A.Unconcerned. B.Positive.

C.Doubtful. D.Ambiguous.

4.What is the purpose of the passage?

A.To explain how to breathe in the oxygen. B.To show people’s responses to the bar.

C.To advertise for Aryavir Kumar’s business. D.To introduce the first oxygen bar in India.