Recent research from the Pew Internet Project suggests that 90% of Americans aged from 12 to 17 use the Inter...

题型：阅读选择题类：模拟题难易度：普通

Recent research from the Pew Internet Project suggests that 90% of Americans aged from 12 to 17 use the Internet, and 51% of those teens use social networks. However, there are many possible problems with social networking sites and the teenagers who use them.

Apart from the social advantages, social networking sites can be used to record school research, develop artistic talents and experiment with other forms of subject creation. They provide a way to communicate with others who share the same interests and to get helpful advice on ongoing projects.
Along with these advantages come some dangers. For example, most social networking sites are open to all, especially MySpace, which is the most popular social network among teens in America. It means that they could be put in unpleasant and frightening situations.
A greater danger is that teens may become objects of the people with secret purposes. The secrecy of some social networking sites makes it easy for dangerous people to find young teens and invite them into dangerous conversations. It's easy for them to pretend as teens and draw children into dangerous real-world communication as well. Then further hurt might be on its way.
Another danger is identity stealing, which can happen when teens share too much information about their names, dates of birth and locations.
Therefore, it's very important to make sure teens are safe when they use social networks.
Many of the same rules that work for online chat work for these sites:
※Don't use your real name.
※ Don't give out personal information to people you don't know. A last name and a town are enough for a bad guy to find where you are.
※ Don't believe that people are who they say to be.
※ Immediately end any communication that makes you uncomfortable and report it to a parent.
Only if you are sure of your safety, can you enjoy the fun brought by social networking. Besides, trying to deal with all problems on your own can lead to terrible results. Remember, asking your parents or school officials for help doesn't mean you are unable to do anything but wiser than many others.

（1）、How many dangers of using social networks are mentioned in the passage?

A、2 B、3 C、4 D、5

（2）、The writer takes MySpace as an example to show that ________.

A、students could be put into unreal situations on the Internet B、teenagers are facing unknown dangers on the social networks C、Internet provides more social websites to American teenagers D、social networks are very popular among teenagers in America

（3）、We can infer from the passage that ________.

A、the dangers are similar when chatting online and surfing social networks B、more than half American teenagers aged from 12 to 17 use social networks C、teens who ask for help are wiser when meeting problems on social networks D、there are more disadvantages than advantages for teens to use social networks

举一反三

Here's an interview to a pilot about his life.
(R="Reporter;" P= Pilot)
R: How much time do pilots actually spend flying a plane?
P: It varies (WES'J) from about 20 minutes on some domestic (区别) flights to as much as 18 hours on international flights. It all depends on if the flight is a short- or long-haul flight.
R: Do pilots take breaks during flights or do they fly the whole time?
P: Yes, we take breaks during long-haul flights. Airlines assign (指派) three or four pilots to long flights. We take turns flying the plane.
R: If pilots are traveling all the time, how do they deal with jet lag (时差)?
P: Jet lag is annoying for almost all pilots. I try to go to sleep as I would at home.
R: How important is it to know the weight and size of the plane you are flying?
P: It is very important. We weigh almost everything put into the airplane and make estimates (估计) according to the number of people on each flight.
R: Do pilots eat the airplane food?
P: Yes, we eat business class food! Airplane food changes every season and is very delicious if you don't hate eating lobster (龙虾) every day! The pilots on the same plane are supposed to make different meal choices so that if one of the dishes causes food poisoning, only one of them will be sick. That way, at least one pilot will always be well enough to fly the plane!

Germs(细菌) are everywhere. You can't see them, but they are on your desk, on your computer, and even in the air!
Like people, germs move around the world. They fly with us on planes. When food, clothes, and other things travel around the world, germs travel, too. Some germs are safe, but some are dangerous. Germs cause illnesses like colds and the flu.
Warmer Weather Brings Germs
The world's weather is changing. Cooler countries are getting warmer, so insects from hot countries can move there. Some of these insects, like mosquitoes(蚊子), carry dangerous germs. These germs cause headaches(头疼), fever, and can even kill people.
Under Your Skin
Your skin protects you from germs. It stops some germs, but not all. They can enter your body when you eat, or when you have a cut. Germs are on your hands, too, they enter(进入) your body when you touch your eyes, nose, or mouse.
Fighting Germs
Your immune system(免疫系统) protects you, too. When germs get inside your body, your immune system finds and kills them. Special cells(细胞) move around your body and fight germs. They help you stay healthy. Other cells make antibodies. Antibodies help your body find and stop germs.
What can you do to fight germs? You should wash your hands with soap(肥皂) and water. Soap kills many germs, and water washes them away.

根据短文内容填空。

A seabird named Lydia recently made a 26-day nonstop(不间断的)journey of about 2,500 miles, just to search for food for her baby. She is fitted with a satellite tracking device (卫星跟踪仪). Her trip started on Oct. 18 from Christmas Island in the Indian Ocean. The trip is known as the longest nonstop journey by one of these endangered seabirds.

Before that, this kind of birds was known only to fly a few hundred miles from where they live, staying away for just a few days at a time. They usually fly over the sea.

The scientists feel it strange that Lydia made such a long, nonstop journey and flew overland. So the above facts raise some serious questions about efforts to stop the decline(减少)of the birds. The number of the birds has fallen by 10 percent over the past 20 years.

Besides, the scientists are surprised that she was away from her baby for such a long time. They wonder why she needed to go that far. Maybe it shows that fish resources (资源)around Christmas Island are not large enough now. That might explain the slow decline of the bird 一 sea pollution(污染) is serious.

阅读理解

In these years, electric (电动的) cars are popular in our daily life. But do you know the electric plane? The company Eviation made the world's first fully electric plane. The plane is called Alice. In September 2022, it made its first flight (飞行) in Washington, the US and flew in the sky for about eight minutes.

The plane can carry nine passenger (乘客) and two pilots at the same time. Also it is very quiet and makes almost no waste gases (废气). There are 21,500 small batteries (电池) on the plane. They weigh 4.000 kg, half of the plane's weight. Together, they make the plane able to fly for one to two hours.

Because it is fully electric, it is cheap to fly the plane. But it is very expensive to make the plane. So nobody knows if electric planes will be a common way to travel around in the future.

阅读理解

World Book Day is coming. What's your favorite book? Here are the answers of four students in Sunshine Middle School.

My favorite book is A Friend like Henry. It's about how a family dog helps a boy deal with his autism(自闭症). When I felt sad, my best friend gave me this book. It cheered me up.

—David

Reading in the holiday is an interesting thing. Twenty Thousand Leagues Under the Sea is my favorite book. It's about a captain's travels under the sea. The story is very interesting and the pictures are fantastic. This book can make you relaxed.

—Tony

I like reading the Four Great Classical Novels of China although I'm a foreigner from Sydney. I can't wait to tell the book Romance of the Three Kingdoms(《三国演义》). I learned a lot about the three kingdoms of Wei, Shu and Wu. If you are interested in history, don't miss it.

—Bob

In my opinion, The Little Prince is the best one. In this book, a young prince falls to the Earth from a small planet and experiences a lot. It's not just a fiction, and it also tells us about the correct values.

—Mary

阅读下列短文，从每小题所给的A、B、C和D选项中选出一个最佳选项。

What are you going to be when you grow up? Maybe a teacher, a doctor or a scientist? How about an ice- cream taster? There is really a job where you can get paid by tasting ice- cream. And this is what Feng Yuanyuan now does.

Feng Yuanyuan, born in 1995, has worked at an ice- cream company for two years. Her main role is to taste and test ice cream products(产品). Usually she tastes more than ten ice- creams a day, but sometimes she has to taste over twenty ice- creams. After eating one, she needs to wash her mouth with lots of warm water so as to comfort her tongue. Through this taste- testing, Feng makes more than 10,000 yuan a month, more than most of her college classmates. However, a by- product of eating so much ice- cream is that she is getting fat." I need to take exercise every day to keep in shape," said Feng.

" To be an ice- cream taster, a person needs to have a sensitive(敏感的) tongue and he must really like ice- cream. Many people may become tired of ice- cream easily if they have to eat it every day, so a good ice- cream taster isn't easy to find," said Feng.

This cool job keeps Feng Yuanyuan busy but happy. She's also very happy that the company's products sell well." After more than a year's hard work, I can tell if an ice- cream has additives(添加剂) just by tasting it.I hope that in the future I can find out what a product is made from with only one bite," Feng said.

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