Are you excited about the new app that you just downloaded to your smart phone? It might be fun now, but be     1     (care): Too much screen time may be harmful     2     your eyes.

The problem, says Sarah Hinkley,     3     is a professor at Ferris State University and the Michigan College of Optometry, comes from the blue light that screens give out. Staring at a smart phone might cause eye strain(劳损)，headaches, and dry eyes. Smartphone and computer screens present greater danger than watching television because the screens     4     (hold) closer to the eyes.

Many doctors and     5     (researcher) agree that you should limit smartphone use to no more than three hours per day. Limiting screen time might seem like a sacrifice (牺牲) now, but it' s worth it. One of my friends found out the hard way. “My eyes were hurting really bad, so I    6     (go) to the doctor,” he sạid. ''I was told that I had an eye strain and was not allowed     7     (look) at my phone for days.

If you eat healthy foods and exercise regularly, there is less of a chance that a medical problem will occur (发生) with your eyes. Taking     8     break every 15 minutes when you’ re working at a computer is also a smart     9     (decide).

Keep in mind: Your eyes are     10     (important) than an incoming text.

9 . In a school in England, a few years ago, a teenager girl heard a boy singing in a room.     1     The girl, Charlotte Jaconelli, also liked singing. Later, the music teacher at school suggested that they sing together.

They did and started singing together as a team. They also become very good friends.

    2    Charlotte wanted to enter the show with Jonathan but he was worried about the way he looked. However, Charlotte persuaded him and they went on the show.

They did the first audition (试音) in April 2012. When they came onto the stage, they were very nervous. The four judges didn’t think they looked good.     3    They sang very well, especially Jonathan. When they finished, people stood up and clapped (鼓掌).

All the judges thought Charlotte and Jonathan were great. One judge, Simon Cowell, said while the girl was good, the boy was fantastic.     4     .

Jonathan didn't think for long. He looked at his friend, and then looked back at the judges, and said that he wanted to stay in the competition with Charlotte.

They carried on together, but they didn't win the competition—they came second. However, they weren’t disappointed (沮丧的).

A few weeks later, Simon Cowell gave them the chance to record a CD.    5    They chose the word "Together’’.

10 . Recently I visited the classroom of Jeremy Coleman, a music teacher. Coleman was preparing for a fresh group of students at his school in Austin, Texas.

Coleman has taught classical guitar at the Texas School for the Blind and Visually Impaired (TSBVI) for many years. “Everyone should be given a chance to learn music and guitar," he said.

The TSBVI was founded in 1856 to provide a specialized education for young Texans who couldn’t see clearly. In the early years, students made brooms (扫帚)and other products that were sold to pay for the school’s operational (运营的)costs.

Since then, the school has developed, and hundreds of students from across the state live and learn there. The educational focus (重点) has changed from vocational (职业的) training to academic (学业的) and life skills. Students also take part in sports, music, and other after-school activities.

Coleman brought classical guitar lessons to TSBVI in 2011. “Teaching guitar to students with poor eyesight isn’t easy,” Coleman said. For one thing, the music course has to be translated into Braille, a form of printing for blind people to read.

“Instead of sight reading, these students will read Braille music and remember it,” Coleman said. “Once they realize what they can do, they love making music.”

Coleman said that after kids leave his program, they often find it difficult to continue their study of music. “The real difficulty is when the students return to their own communities,” Coleman said. “Finding a proper teacher for lessons is sometimes impossible.”

For that reason, Coleman and some other TSBVI teachers developed an online program called “Let’s Play.” The program serves as a guide for classical guitar training for students with poor eyesight and their teachers.

“The program continues to grow,” Coleman said. He hopes that it will help musicians with poor eyesight continue to develop their skills.