Read the passage below and answer the following questions （根據(jù)文章內(nèi)容回答下列問題）
   Your smartphone may seem like the center of your entertainment，but a Kent State University study shows that too much phone use is taking the fun right out of our spare time.Researchers watched a group of nearly 600 students and recorded their daily smartphone use.
   Half were considered in the "high-use" group experienced more stress during their spare time than the other group.So what can we do in order to really take advantage of our spare time？We have collected the following activities that also take a few hours to complete，but best part of all，you'll improve your health in the process.Whether you're at home or on holiday，it's important to disconnect from the Wi-Fi.Walking in nature can do good to your health.As a professional （職業(yè)的） traveler，Samantha Brown put it in a recent passage， "I put my map in my back pocket，put down my phones and take a good long walk.Just walk around." Go to bed earlier.What can help improve your mood （心情）？Extra sleep，naturally.Getting the right amount of sleep is very important to our health and studies show that we don't get enough of it.How many students experienced more stress during their spare time than the other group？
   Read a book.And let yourself get lost in a good story.Research shows that reading can reduce stress，keep your brain sharp and can even help you sleep better.Everyone should spend at least 30 minutes reading every day.
   Putting pen to paper is good exercise.Try writing down your thoughts.Writing has a lot of health advantages.Besides，writing down your thoughts may even help clear your mind.
   Do sports as often as possible.Keep at least 20 minutes for outdoor activities.This makes you active all the time.

（1）How many students experienced more stress during their spare time than the other group？

About 300.

About 300.

（2）Why did the Kent State University do the study？

To show that too much phone use is taking the fun right out of our spare time.

To show that too much phone use is taking the fun right out of our spare time.

（3）Walking in nature doesn't harm to our health，does it？

No，it doesn't.

No，it doesn't.

（4）What is one advantage of reading？

Reading can reduce stress，keep your brain sharp and can even help you sleep better.

Reading can reduce stress，keep your brain sharp and can even help you sleep better.

（5）How much time should we spend reading every day according to the passage？

At least 30 minutes.

At least 30 minutes.

（6）As students，besides entertainments，what else can we do on the smartphones in our free time？ （At least 2 points）

Connecting with our teachers

Connecting with our teachers

.Besides，

Learning languages and searching for useful information

Learning languages and searching for useful information

.