根据句子的需要，使用括号中所提供的单词的适当形式填空

It's very ________(danger) if you have something wrong but you don't want to tell your parents.

用句中所给词的适当形式填空。

It's very ________ (danger), you'd better not go too high.

1 

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

DIY, which means Do It Yourself, is quite popular in UK. Lots of stores and supermarkets sell DIY things. TV proprammes show people how to DIY.

English people like DIY. There is a saying in UK – “An Englishman’s home is his castle”. Huge numbers of people spend their holidays making their homes beautiful “castles”. If there is anything that needs fixing around their houses, such as painting the walls or putting in a new shower, they will do the jobs themselves. They share DIY experiences with their friends. More and more people have discovered the joy of DIY. Sometimes people also DIY for saving money. With the economic downturn at present, many people can not afford to buy a bigger house. They are looking at how they can make their house better without spending a lot of money. It is not surprising that DIY is so popular.

  DIY can be difficult. There is a huge market for DIY furniture which people need to put together themselves with a few basic tools. However, people often find it not easy to build a piece of furniture because they can’t understand the instructions. Sometimes the instructions are simple and clear, but the furniture itself is difficult to build. One thing is for sure, though most DIY projects are started with the best intentions, many of them may not get finished. DIY can also be dangerous. For example, anything electrical should be done by a professional worker. Unluckily, many people don’t care about this warning and put themselves in danger. It is reported that in just one year over 230,000 people were hurt while doing DIY in UK, including 41,000 who fell off ladders.

  Therefore, DIY can bring us fun and help us save money, but it is not always as easy as it is thought to be if we bite off more than we can chew. Maybe factories should make products that are easier and safer for us to DIY.

1.How do many English people spend their holidays according to the passage?

A.     Making their homes beautiful.   B. Visiting their friends.

B.     Travelling all over the world.   D. Making a lot of money.

2. Why do English people like DIY?

A.     Many stores sell DIY things.   B. DIY can bring them fun.

C. TV programmes teach them to DIY   D. All DIY projects are easy.

3.What can we learn from the passage?

A.     DIY is a waste of money.   B. It is always difficult to DIY.

B.     We should be careful while doing DIY.   D. It’s very safe for us to DIY

4.In the passage, “we bite off more than we can chew” probably means ___________.

A. we can eat everything we like   B. we should do something difficult

C. we do something that is too difficult   D. we eat too much food that is not safe