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Making friends is a skill. Like most skills, you can improve it if you are patient. If you want to meet people and make friends, you must be willing to take action. You must first go where there are people. You won't make friends staying home a      .

Joining a club or a group, talking to those who like the same things as you do is much e     . Or join someone in some activities.

Many people are n    when talking to new people. After all, meeting strangers means seeing  the unknown. And it's human nature to feel a bit unpleasant about the unknown. Most of fears about d     . with new people come from doubts(怀疑) about ourselves. We imagine other people are judging us-finding us too tall or too short, too this or too that. But don't forget that they must be feeling the s     way. Try to accept yourself as you are, and try to make others feel at home.  You'll all feel more c     .

Try to be brave even if you don't feel that way when you e   a room full of strangers. Walk  tall and straight, look d    at other people and smile.

If you see someone you'd like to speak to, say something. Don't w     for the other person to start a conversation(对话).

Just meeting someone new does not mean that you'll make friends with that person. Friendship is based on mutual(相互的)likings and“give and take”．It takes time and effort(精力)for us to d    friendship. And there are things that stop a new friendship from growing.

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     We all know that teenagers like to sleep late. But more and more research is showing that this is not

just a preference - or even the result of late-night studying or instant messaging - but is rooted in their

biological rhythms (节律). All of this would be little more than an interesting observation except that most

high schools start so early, and so many teenagers are having a hard time staying awake.

     A recent article in The Times cited a National Sleep Foundation survey in which more than a quarter

of the students reported that they fell asleep in class at least once a week. Researchers say this is true

because youngsters - beginning around age 12 until they reach their mid-20s-only start producing

melatonin, the sleep-inducing hormone (荷尔蒙), around 11:00 pm and that production lasts until about 7:00 am. In adults, melatonin lasts to around 4:00 am. Trying to wake up a teenager before 7:00 am is

like trying to awake an adult before 4:00 am.

     The obvious remedy (补救) would be for high schools to start later-well, after 8:00 am. A handful of

schools that have switched have reported beneficial results. School officials in Minneapolis say that

attendance improved and students' grades rose slightly after they changed to start at 8:40 am several

years ago. In Wilton, Conn., where the high school start time was pushed back to 8:20 am from 7:35 am,

teachers and parents reported better student behavior and greater alertness (活泼). Surveys of students

in both districts indicated that they did not use the later starts as an excuse to go to bed later.

     Numerous districts have considered the idea of later high school hours, only to drop it because of

fierce adult opposition. Coaches complain that the later classroom hours in the afternoon would take time

from their training programs and teams' success. School bus companies would be forced to change their

schedules. And many parents complained that they would have to adjust their own schedules.

     Many schools officials say more research is needed. We're all for that and for remembering that the

goal is to educate youngsters-and for that they need to be awake.

1. According to the new research, teenagers like to sleep late because _________ .

A. their biological systems make them do so

B. they waste too much rest time sending instant messages

C. they prefer to stay in bed rather than get up early  

D. they have to study till late at night

2. We can learn from the second paragraph that melatonin makes ________ .

A. youngsters awake after 7:00 am

B. youngsters sleepy before 7:00 am

C. adults sleepy after 4:00 am        

D. adults awake after 4:00 am

3. The third paragraph is written to show that _________ .

A. many high schools start after 8:00 am

B. later high school start time made students go to bed late

C. students don't go to bed late even though they have later high school hours

D. later high school start time is a very effective measure

4. According to the passage, who are fiercely against later high school hours?

① School team coaches.  

② Many parents.  

③ School teachers.

④ School bus companies.

A. ①②③    

B. ①②④    

C. ①③④  

D. ②③④

5. We can infer from the passage that the author's attitude towards later high school hours is ______ .

A. unclear  

B. negative      

C. uninterested    

D. positive