Having a teenager at home can be a real headache. Many teenagers smoke, wear strange hairstyle and even fight. Basically (基本上) , they are often taking risks.
Earlier studies have shown that teenagers are more likely to make irrational decisions than people from any other age group, including children and adults. Is it that teenagers are too young to tell right from wrong? Not really. So what’s the reason?
According to Laurence, a teacher from a US university, the reason is that teenagers care a lot about how their peers (同龄人) view them—that is “peer influence”.
As children enter their teenage years, they spend more time with their friends and classmates, and also they care more about what they think of them. This makes teenagers make decisions without thinking about the costs.
In a test, a group of teenagers were asked to play a video driving game. When they played with their friends watching around them, they took more chances and drove more carelessly because that would increase their possibility of winning. But when they played alone, they drove more safely.
Why do peers have such a big influence on teens’ behavior?
As Laurence sees it, a teenager’s brain is like a car with a good accelerator (油门) but a weak brake (刹车). The “accelerator” is fully developed by teenage years while the “brake” is still not fully developed. When teenagers are watched by their peers, they usually push hard on the accelerator. With their weak brake, it is likely that they are going to end up in an accident. But the good news is that a violent (暴力的) teenager doesn’t necessarily become a violent adult. About two-thirds to three-quarters of violent youth grow out of it. “They get more self-controlled.”
【小题1】What does the underlined word “irrational” in the 2nd paragraph mean?

句型转换
【小题1】He has to help his parents at home. （改为否定句）
He ________  _______ to help his parents at home.
【小题2】She does well in English. ( 改为同义句)
She _______  _______  _______English.
【小题3】She needs two teaspoons of yogurt.（对划线部分提问）
________  _________  teaspoons of yogurt does she need?
【小题4】She is too young. She can’t look after herself.  (改为简单句)
She is _______  ________  _______ look after herself.
【小题5】She saw a movie about animals last week. (对划线部分提问)
_______  did she _______ last week ?

Are you carrying too much on your back at school? I’m sure lots of children of your age will say “Yes”. Not only the students in China have this problem, but children in the United States also have heavy school bags.
Doctors are starting to worry about young students’ back and neck because their school bags are too heavy for them.
“It’s hard for me to go upstairs with my heavy bag,” said Rick Hammond, an ll-year-old student in the USA.
Rick is among students who have school bags with two straps(带子),and many other students choose rolling(有滚轮的) bags.
But even with rolling bags ,getting upstairs is still a problem for children .Doctors say students should carry no more than 10% to 15% of their own body weight (重量)。
Scott Bautch, a back doctor, said children under Grade 4 should carry no more than 10% of their weight and older children shouldn’t stay with over 15% , because their bodies are still growing.
Teachers and parents should do some things to help children. And the best answer is to have less homework!
【小题1】From the passage we cam know that        .

A.So I have to take him to the hospital

B.It’s Saturday

C.He was asleep soon after he went to bed

D.She began to cry when her mother left

E.At that time the telephone rang and he went to answer it

After dinner Mr Jackson turned on the television．He tried to find a football game on it．1.．“Hello．”he said，“7462135．”“It’s Betty speaking，”said a woman．“Henry is i11．2.．But Lucy is too young…”“Don’t worry．I’ll go and look after her．But where’s your husband James?”  “He’s gone to London．He’11 be back at two tomorrow morning．”

Mr Jackson arrived at his sister’s home a few minutes later．Lucy was only four．3.．Mr Jackson told her some stories and showed her some nice pictures．He didn’t stop until the little girl fell asleep．Mr Jackson went home after James came back．4.．

Mrs Jackson was on duty in the hospital that night The next morning，  she came back home and woke Mr Jackson up．He had a look at the clock on the wall and found it was half past eight．He jumped off the bed and ran to the garage(车库)with his bag．His wife tried to say something．but he called back．“I was never 1ate for work．you know．But I’m late this morning，”“No．you aren’t，”said Mrs Jackson．“5.．”