阅读理解

    People are being lured(引诱) onto Facebook with the promise of a fun, free service without realizing they're paying for it by giving up large amounts of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.

    Most Facebook users don't realize this is happening. Even if they know what the company is up to, they still have no idea what they're paying for Facebook because people don't really know what their personal data is worth.

    The biggest problem, however, is that the company keeps changing the rules. Early on, you keep everything private. That was the great thing about Facebook—you could create your own little private network. Last year, the company changed its privacy rules so that many things—your city, your photo, your friends' names—were set, by default(默认) to be shared with everyone on the Internet.

    According to Facebook's vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don't share information, they have a “less satisfying experience”.

    Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they're online connecting with their friends?

    The privacy issue has already landed Facebook in hot water in Washington. In April, Senator(议员) Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set principles for social-networking sites. “I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them，” Schrage admits.

    I suspect that whatever Facebook has done so far to invade our privacy is only the beginning, which is why I'm considering deactivating (撤销) my account. Facebook is a handy site, but I'm upset by the idea that my information is in the hands of people I don't know. That's too high a price to pay.

    Knowing your neighbors can make you feel safer and can make your life a little more enjoyable.____

    Start a Facebook group. Many online groups already exist for local communities, but they may just focus on swapping and selling objects, or simply for exploring the local area.____For example, starting a Facebook group.

    Get volunteering. Volunteering is a great way to meet like-minded neighbors and make a difference to your community.____Charities are the most obvious place to start. Charities, large or small, are always looking for help in regions across the UK. A simple Google search can help you discover local charities and volunteer opportunities.

    Practice everyday kindness. Kindness is the start to possible long-lasting friendships. Everyday acts of kindness can be as simple as saying hello when you see your neighbors in the street or the supermarket. It may be seeing someone struggle with the gardening and offering your help.____

    Start an exercise group. There are a rare few of us that are motivated to start exercising, and even fewer that enjoy going it alone.____Plan big walks of your area and ask neighbors to come along. You could sign up together to attempt a marathon or half marathon. Or perhaps you can arrange a Zumba, yoga, or aerobics (有氧运动) class in the community centre.

A. However, you are often too busy to realize this.

B. There are many ways to volunteer in your local community.

C. Starting a neighborhood exercise group may be just the ticket.

D. So why not set one up simply to get to know your neighbors better?

E. It may also be taking in that rather large parcel when no one is home.

F. If you're new to an area or don't know how to make local friends, try this advice.

G. These groups indeed make life in communities easier and more comfortable for you.

某学校初三年级男生共200名，随机抽取10名测量他们的身高（单位：cm）为：181，176，169，155，163，

175，173，167，165，166．