1．    Heated （1） （argue） and cold silences are common between teenagers and their parents， （2） is because teenagers usually go through physical and mental changes in their growth.They have a strong desire for independence as well as their parents' love and support.It can be a tough challenge for them （3） （achieve） a balance.
    It must （4） （stress） that they can improve the situation by communicating （5） （regular） in an honest way.The key to （6） （maintain） a good parent-child relationship is to understand the situation from each other's point of view.Whenever quarrels come about，teenagers must remember that perhaps their parents （7） （experience） something similar and their advice is quite （8） （benefit）.
    The good news is （9） the stormy period will not last long.Everything will turn （10） fine in the end.

2．We get it：You're tired.You're busy.And your shoes are way over there.Excuses are OK sometimes，but not every day and especially not today.So put on your sneakers，get up off the couch，and let us kick your excuses to the curb （路牙子）.
   "I dislike panting （氣喘）!"
   Being really out of breath may mean you're trying too much too soon，which will kill your confidence.But you don't have to be huffing and puffing to get a workout.Active doesn't have to mean high-intensity （高強(qiáng)度）.It's just about moving.
   "I hate exercise."
   It may seem unbearable，but you just have to get started.Exercise releases endorphins （your brain's own feel-good chemicals），which can be habit forming.What's the best exercise？The one you'll do regularly.So you may hate running.Don't run!Ride your bike or just dance.Even cleaning your room is active.As long as you're moving and getting your blood pumping，it counts.So get creative.
   "I don't have time."
   You may not have lots of time to spare when you're busy with schoolwork，but I bet you can find 10 minutes.Bonus：An activity break will send oxygen to your brain，making you super-alert （超級(jí)警覺的） and more creative，too.Famous thinkers like Aristotle and Steve Jobs liked "walking meetings"，and you can follow in their footsteps by moving around while you brainstorm about a tough task or memorize your English vocabulary.
   "I never see results !"
   Even if you train with the help of a professional，you won't see results right away.But you will feel them almost immediately.Don't focus on how your body looks -focus on how you feel.Keep a journal of when you exercise （or don't） and how you feel that day：Stressed？Focused？Tired？When you start noticing the amazing effects of exercise，you'll have no excuses.

（1）The underlined part "huffing and puffing" in Paragraph 2 can be replaced by .
A．moving around
B．breathing heavily
C．feeling confident
D．wearing nice shoes
（2）In the author's eyes，the best exercise is the one that .
A．is very relaxing
B．you will stick to
C．produces good results
D．you can spare time on
（3）Steve Jobs is mentioned to prove that doing exercise .
A．is good for one's figure
B．is good for one's health
C．makes one much happier
D．makes one more productive
（4）Which of the following can be the best title for the text？
A．Exercise Excuses We Are Not Buying
B．Benefits of Regular Physical Activity
C．The Best Exercise and Fitness Routines
D．How to Get Started with an Exercise Plan

3．

A．willing B．educated C．pushing D．generation E.teenagers F.volunteer

Does the face-down（1）need a hands-up？Well，probably not.The fact is that many of today's teenagers are better（2）and more creative than past generations.They also seem to be enthusiastic and（3）to become leaders.More young people than ever（4）to help their communities.There are also brave young people such as Malala Yousafzai，the teenager who won the 2014 Nobel Peace Prize for（5）girls' rights to go to school.