Passage OneSound sleep occurs when one's internal clock is regulated. Circadian rhythms（生理节奏）can become compromised quite easily. Many people with sleep troubles tend to vary bedtimes. To avoid this common problem, sleep sufferers should go to bed and wake up at the same time every day. to help improve circadian rhythms, sufferers should enjoy 15 minutes of sun exposure the first thing in the morning.A bedtime routine can help prevent insomnia（失眠）. One hour before bedtime, one should lower the lights and relax. Reading a book or listening to calm music can help prepare the body for a good night's sleep. Taking a warm, candlelit bath or drinking a cup of warm milk can also help you prepare for deep sleep at night.Stress can have a bad effect on the body and the ability to sleep. A daily exercise routine can help lower the body's stress naturally. One can also manage stress by writing diaries. Writing diaries can help people express their anxieties, plan for the future and improve sleep. Other ways to lower stress include deep breathing exercises and progressive muscle relaxation.The light sending out from computers, cellphones, tablets and televisions can cause sleep problems. Therefore, these items should be turned off at least an hour before bedtime. Additionally lowering the backlight on these electronic devices earlier in the evening can help you fall asleep faster and stay asleep longer once bedtime arrives.A perfect bedroom invites sweet sleep. Most people sleep better in a cool, dark, and quiet room. Lower the temperature in the room to 16~20 degrees for a peaceful night's sleep. A dark room can be accomplished by installing light blocking curtains or wearing a sleep mask. Noise can be reduced with either earplugs or a white noise machine. Finally, a comfortable mattress（床垫）and pillows are essential to a good night's sleep.What can be done to reduce stress?

Passage OneSound sleep occurs when one's internal clock is regulated. Circadian rhythms（生理节奏）can become compromised quite easily. Many people with sleep troubles tend to vary bedtimes. To avoid this common problem, sleep sufferers should go to bed and wake up at the same time every day. to help improve circadian rhythms, sufferers should enjoy 15 minutes of sun exposure the first thing in the morning.A bedtime routine can help prevent insomnia（失眠）. One hour before bedtime, one should lower the lights and relax. Reading a book or listening to calm music can help prepare the body for a good night's sleep. Taking a warm, candlelit bath or drinking a cup of warm milk can also help you prepare for deep sleep at night.Stress can have a bad effect on the body and the ability to sleep. A daily exercise routine can help lower the body's stress naturally. One can also manage stress by writing diaries. Writing diaries can help people express their anxieties, plan for the future and improve sleep. Other ways to lower stress include deep breathing exercises and progressive muscle relaxation.The light sending out from computers, cellphones, tablets and televisions can cause sleep problems. Therefore, these items should be turned off at least an hour before bedtime. Additionally lowering the backlight on these electronic devices earlier in the evening can help you fall asleep faster and stay asleep longer once bedtime arrives.A perfect bedroom invites sweet sleep. Most people sleep better in a cool, dark, and quiet room. Lower the temperature in the room to 16~20 degrees for a peaceful night's sleep. A dark room can be accomplished by installing light blocking curtains or wearing a sleep mask. Noise can be reduced with either earplugs or a white noise machine. Finally, a comfortable mattress（床垫）and pillows are essential to a good night's sleep.What is the perfect condition for sleep?

Passage TwoTom was aged four but he was talking like a two-year-old baby. He was saying such things as "kick ball" and "want car", and using lots of one-word sentences. He should have been saying some really long sentences and telling stories with them. He wasn't. Something had gone terribly wrong.Quite a few children have what is called a"language delay". For some reason they don't learn to speak as quickly as they should. Their friends shoot ahead and they're left behind. As a result, they get very lonely. Nobody wants to talk to you if you can't talk back.Can anything be done to help these children? Yes. They can go to see a speech therapist—a person who's specially trained to work out what's wrong and who knows how to teach language to children. This is what happened to Tom. The speech therapist played some games with him and heard how he talked. She made a recording of his speech, and chatted to his mom and dad about his background. They'd taken Tom to see a doctor, but the doctor hadn't found anything wrong with him. He seemed perfectly normal in every way—except he just wasn't talking.After Tom and his parents had gone home, the therapist listened carefully to the recording she'd made. Then she looked at a chart which showed how language developed in children aged two, three and four. She could see Tom was a long way behind.The next step, she decided, was to teach Tom how to say some new sentences like"kick a red ball, " and"the clown is kicking a ball."Tom didn't get the new sentences right straight away. But the therapist was very patient, and after a few more visits he started to make some progress.How did the author introduce the topic of this passage?

Passage TwoTom was aged four but he was talking like a two-year-old baby. He was saying such things as "kick ball" and "want car", and using lots of one-word sentences. He should have been saying some really long sentences and telling stories with them. He wasn't. Something had gone terribly wrong.Quite a few children have what is called a"language delay". For some reason they don't learn to speak as quickly as they should. Their friends shoot ahead and they're left behind. As a result, they get very lonely. Nobody wants to talk to you if you can't talk back.Can anything be done to help these children? Yes. They can go to see a speech therapist—a person who's specially trained to work out what's wrong and who knows how to teach language to children. This is what happened to Tom. The speech therapist played some games with him and heard how he talked. She made a recording of his speech, and chatted to his mom and dad about his background. They'd taken Tom to see a doctor, but the doctor hadn't found anything wrong with him. He seemed perfectly normal in every way—except he just wasn't talking.After Tom and his parents had gone home, the therapist listened carefully to the recording she'd made. Then she looked at a chart which showed how language developed in children aged two, three and four. She could see Tom was a long way behind.The next step, she decided, was to teach Tom how to say some new sentences like"kick a red ball, " and"the clown is kicking a ball."Tom didn't get the new sentences right straight away. But the therapist was very patient, and after a few more visits he started to make some progress.What can be inferred from the passage about "language delay"?

Passage TwoTom was aged four but he was talking like a two-year-old baby. He was saying such things as "kick ball" and "want car", and using lots of one-word sentences. He should have been saying some really long sentences and telling stories with them. He wasn't. Something had gone terribly wrong.Quite a few children have what is called a"language delay". For some reason they don't learn to speak as quickly as they should. Their friends shoot ahead and they're left behind. As a result, they get very lonely. Nobody wants to talk to you if you can't talk back.Can anything be done to help these children? Yes. They can go to see a speech therapist—a person who's specially trained to work out what's wrong and who knows how to teach language to children. This is what happened to Tom. The speech therapist played some games with him and heard how he talked. She made a recording of his speech, and chatted to his mom and dad about his background. They'd taken Tom to see a doctor, but the doctor hadn't found anything wrong with him. He seemed perfectly normal in every way—except he just wasn't talking.After Tom and his parents had gone home, the therapist listened carefully to the recording she'd made. Then she looked at a chart which showed how language developed in children aged two, three and four. She could see Tom was a long way behind.The next step, she decided, was to teach Tom how to say some new sentences like"kick a red ball, " and"the clown is kicking a ball."Tom didn't get the new sentences right straight away. But the therapist was very patient, and after a few more visits he started to make some progress.What did the speech therapist do to help Tom?

Passage TwoTom was aged four but he was talking like a two-year-old baby. He was saying such things as "kick ball" and "want car", and using lots of one-word sentences. He should have been saying some really long sentences and telling stories with them. He wasn't. Something had gone terribly wrong.Quite a few children have what is called a"language delay". For some reason they don't learn to speak as quickly as they should. Their friends shoot ahead and they're left behind. As a result, they get very lonely. Nobody wants to talk to you if you can't talk back.Can anything be done to help these children? Yes. They can go to see a speech therapist—a person who's specially trained to work out what's wrong and who knows how to teach language to children. This is what happened to Tom. The speech therapist played some games with him and heard how he talked. She made a recording of his speech, and chatted to his mom and dad about his background. They'd taken Tom to see a doctor, but the doctor hadn't found anything wrong with him. He seemed perfectly normal in every way—except he just wasn't talking.After Tom and his parents had gone home, the therapist listened carefully to the recording she'd made. Then she looked at a chart which showed how language developed in children aged two, three and four. She could see Tom was a long way behind.The next step, she decided, was to teach Tom how to say some new sentences like"kick a red ball, " and"the clown is kicking a ball."Tom didn't get the new sentences right straight away. But the therapist was very patient, and after a few more visits he started to make some progress.What is the best title for the passage?

Passage ThreeOn a dry and cold Friday afternoon last October, Sharon Seline exchanged text messages with her daughter who was in college. They "chatted" back and forth, with the mom asking how things were going and the daughter answering positively followed by emoticons（表情符）showing smiles, b-i-g smiles and hearts.Later that night. her daughter attempted suicide.In the days that followed, it came to light that she'd hidden herself in her dorm, crying and showing signs of depression—a completely different reality from the one that she conveyed in texts and Facebook posts.As human beings, our only real method of connection is through real communication. Studies show that only 7% of communication is based on writing and speaking. The majority of 93% is based on body language. Indeed, it's only when we can hear a tone of voice or look into someone's eyes that we're able to know when "I'm fine" doesn't mean they're fine at all.This is where social media gets risky.With modern technology, anyone can hide behind the text, the e-mail, or the Facebook post, projecting any image they want and creating a false image of their choosing. They can be whoever they want to be. And without the ability to receive body language, their audiences are none the wiser.This presents a paradox which doesn't exist before. With all the powerful social technologies at our fingertips, we are more connected—and potentially more disconnected—than ever before. Every relevant metric（衡量标准）shows that we are interacting at a great speed and frequency through social media. But are we really communicating? With 93% of our communication context（语境）lost, we are now attempting to establish relationships and make decisions based on phrases or emoticons, which may or may not accurately represent the truth.Why does social media get risky according to the author?

Passage ThreeOn a dry and cold Friday afternoon last October, Sharon Seline exchanged text messages with her daughter who was in college. They "chatted" back and forth, with the mom asking how things were going and the daughter answering positively followed by emoticons（表情符）showing smiles, b-i-g smiles and hearts.Later that night. her daughter attempted suicide.In the days that followed, it came to light that she'd hidden herself in her dorm, crying and showing signs of depression—a completely different reality from the one that she conveyed in texts and Facebook posts.As human beings, our only real method of connection is through real communication. Studies show that only 7% of communication is based on writing and speaking. The majority of 93% is based on body language. Indeed, it's only when we can hear a tone of voice or look into someone's eyes that we're able to know when "I'm fine" doesn't mean they're fine at all.This is where social media gets risky.With modern technology, anyone can hide behind the text, the e-mail, or the Facebook post, projecting any image they want and creating a false image of their choosing. They can be whoever they want to be. And without the ability to receive body language, their audiences are none the wiser.This presents a paradox which doesn't exist before. With all the powerful social technologies at our fingertips, we are more connected—and potentially more disconnected—than ever before. Every relevant metric（衡量标准）shows that we are interacting at a great speed and frequency through social media. But are we really communicating? With 93% of our communication context（语境）lost, we are now attempting to establish relationships and make decisions based on phrases or emoticons, which may or may not accurately represent the truth.What phenomenon does the underlined word "paradox" (Paragraph 7) reflect?

Passage ThreeOn a dry and cold Friday afternoon last October, Sharon Seline exchanged text messages with her daughter who was in college. They "chatted" back and forth, with the mom asking how things were going and the daughter answering positively followed by emoticons（表情符）showing smiles, b-i-g smiles and hearts.Later that night. her daughter attempted suicide.In the days that followed, it came to light that she'd hidden herself in her dorm, crying and showing signs of depression—a completely different reality from the one that she conveyed in texts and Facebook posts.As human beings, our only real method of connection is through real communication. Studies show that only 7% of communication is based on writing and speaking. The majority of 93% is based on body language. Indeed, it's only when we can hear a tone of voice or look into someone's eyes that we're able to know when "I'm fine" doesn't mean they're fine at all.This is where social media gets risky.With modern technology, anyone can hide behind the text, the e-mail, or the Facebook post, projecting any image they want and creating a false image of their choosing. They can be whoever they want to be. And without the ability to receive body language, their audiences are none the wiser.This presents a paradox which doesn't exist before. With all the powerful social technologies at our fingertips, we are more connected—and potentially more disconnected—than ever before. Every relevant metric（衡量标准）shows that we are interacting at a great speed and frequency through social media. But are we really communicating? With 93% of our communication context（语境）lost, we are now attempting to establish relationships and make decisions based on phrases or emoticons, which may or may not accurately represent the truth.What is true about today's communication through social media?

Passage ThreeOn a dry and cold Friday afternoon last October, Sharon Seline exchanged text messages with her daughter who was in college. They "chatted" back and forth, with the mom asking how things were going and the daughter answering positively followed by emoticons（表情符）showing smiles, b-i-g smiles and hearts.Later that night. her daughter attempted suicide.In the days that followed, it came to light that she'd hidden herself in her dorm, crying and showing signs of depression—a completely different reality from the one that she conveyed in texts and Facebook posts.As human beings, our only real method of connection is through real communication. Studies show that only 7% of communication is based on writing and speaking. The majority of 93% is based on body language. Indeed, it's only when we can hear a tone of voice or look into someone's eyes that we're able to know when "I'm fine" doesn't mean they're fine at all.This is where social media gets risky.With modern technology, anyone can hide behind the text, the e-mail, or the Facebook post, projecting any image they want and creating a false image of their choosing. They can be whoever they want to be. And without the ability to receive body language, their audiences are none the wiser.This presents a paradox which doesn't exist before. With all the powerful social technologies at our fingertips, we are more connected—and potentially more disconnected—than ever before. Every relevant metric（衡量标准）shows that we are interacting at a great speed and frequency through social media. But are we really communicating? With 93% of our communication context（语境）lost, we are now attempting to establish relationships and make decisions based on phrases or emoticons, which may or may not accurately represent the truth.What is the best title for the passage?