1 . Researchers have been trying to uncover the cause of a steady decline of drug and alcohol use in teens. Some suspect it’s due to anti-drug campaigns or the decline of cigarettes as a gateway drug. But another theory has begun to surface. Is a new drug replacing the old ones? Are smart phones taking their place?

I noticed that using my smart phone took away so many life experiences. I hadn’t minded before when my own phone could distract me, but now I felt annoyed when my friends or family used their phones when we were together. Sure it was uncomfortable at first, not having a clutch (紧握) to fall back on when I didn’t feel like talking.But we shouldn’t use our devices as the universal conversation avoider, or as our distraction from the discomfort of human interaction. How can we learn to interact when our phones are on hand at all times to prevent ourselves from doing so?

Still, smart phones can sometimes be wonderful tools. They allow us to take beautiful photos and help us connect with old friends and maintain long-distance relationships. They allow us to have an endless amount of information at our fingertips, and give us directions to whatever destinations. But we must consider how every tool smart phones provide us with can also influence our lives. Not only does smart phone and screen use have an effect on relationships, it can also shape an individual and the brain. Studies have shown that excessive Internet usage can cause increased depression, loneliness, and anxiety in adolescents.

So my advice to teens who feel the same way as I do? My decision to go without a phone was definitely extreme, considering our generation. So try ditching your phone for a week. Observe how it affects your relationships, your mood, and your presence. You just might end up feeling less stressed, happier, and more connected.

1. How does the author introduce the topic?

A．By presenting study findings.

B．By creating a new theory.

C．By asking questions.

D．By doing research.

2. What is mainly discussed about smart phones in Paragraph 2?

A．They are perfectly designed.

B．Their features are striking.

C．Their operations are too complex.

D．They have an impact on social life.

3. What may affect teenagers’ mental health according to Paragraph 3?

A．Bad family relationship.

B．Too much Internet time.

C．Easy access to smart phones.

D．Harmful online information.

4. What does the underlined word “ditching” in the last paragraph probably mean?

A．Giving up.

B．Giving away.

C．Turning down.

D．Turning back.