题目内容：

    Hey，you—look up! Our iPhone addictions(瘾)are destroying public space and damaging the normal social communication. The host collects phones at the door of the dinner party. At a law firm，partners keep a“no-mobile phone”policy at meetings. Each day，a good number of people gather outside NewYork’s high schools, offering, for a small price, to store students’ mobile phones during the day. In public, it’s hard to think of a place beyond the darkness of the movie theater where phone use isn’t allowed. In truly public space-on sidewalks，in parks，on buses and on trains—we move with the face down, our phones shine like flashlights，

Consider the case of a recent murder on a San Francisco train. On Sept.23，in a crowded car， a man pulled a gun from his jacket. He raised the gun，pointing it across the aisle. He drew it out several more times, once using the hand holding the gun to wipe his nose. Dozens of passengers stood and sat just feet away—but none reacted. Their eyes，focused on smartphones, didn’t lift until the gunman fired a bulletin into the back of a San Francisco State student getting off the train.

There are thousands of similar stories that together sound the alarm for a new understanding of public space. In Japan，more than a dozen people fall off railway platforms while looking at their phones each year. Some experts there have called for bans on texting. Besides，many train station notices remind people to look where they are going，and even mobile phone companies have begun to educate users about the dangers of looking at a phone while walking.

The development of information technology is separating us from our surroundings. The urban theorist Malcolm McCullough writes“Closed in cars, often in headphones，seldom in places where they can communicate in person seldom choosing face-to-face meetings，moden citzens escaped from public life.

1.The author wrote Paragraph2 to_______.

A.explain how the mobile phone destroyed public places

B.list the examples of using mobile phones

C.tell us to use mobile phones in public places

D.make us believe the great changes of using mobil ephones

2.What can we conclude from the murder case on a SanFrancisco train?

A.The murder didn’t shoot the passengers on the train.

B.Many people were aware of the murderer before he shot.

C.It is no good ignoring other people around when taking trains.

D.Smartphone addictions have changed the normal social communication.

3.How did the author develop the passage?

A.Giving examples.

B.Listing numbers.

C.Comparing facts.

D.Making conclusions.

4.The author in the last paragraph suggested_______.

A.smartphones have taken little people’s attention

B.the development of information technology has a good effect on people

C.too much use of smartphones may do harm to people’s communication

D.smartphones may change modern people’s life completely