根据文章意思，用括号中所给词的适当形式填空。

There is a big zoo in Beijing. There are many ________ (animal)in it. On Sunday many ________ (parent)take their ________ (son)and ________ (daughter)to the zoo. There are many ________ (people)in the zoo on Sunday. They always have a good time in the zoo.

Is the world too crowded? Well, that’s a hard question to answer. It’s all a matter of perspective(视角).In Montana, you might drive for a mile in any direction and not see another human being. In Macao, 60,000 people live in every square mile!
What is true is that the world’s population doesn’t stay the same. It has been increasing at a very fast rate(比例).That’s in part because in each generation(代) these are more people who then have children than in the last generation.
Five hundred years ago, the population of the world was about 460 million. In 1900,the world’s population was under 2 billion(十亿).Right now it is doubling every 40 years. That means, if this rate of growth continues, when you are a parent, there will be twice as many people on earth as there are now. Wow! Now that’s a whole lot of people! Soon the world’s population will probably reach 7 billion. Some people worry about that! But there is a lot of disagreement about just how many people on earth equals(相当于) too many people. But everyone agrees that the more people there are, the more resources(资源) the world needs to feed, house and take care of all of them, and the more need there is to think carefully about how we live and use the earth’s resources.
【小题1】From the first paragraph we can know that ­________.

Fifty-three years ago Barbie Millicent Roberts first appeared in the world of toys.
Since then, Barbie doll, as everyone called her,has become the most successful toy doll in history. Her parent,the Mattel Company,said that 90% of all Ame”rican girls between 3 and 10 have at least one Barbie at home.
However, Barbie is facing some trouble at present (现在). There are many similar dolls on the market in competiotion with her. Another doll named Bratz, for example, come to life thirteen years ago. She looked more like today’s pop stars with heavy makeup(浓妆) and miniskirts. And her company offers more kind of clothes too.
It seems that Barbie has lost her magic among older girls. “ For younger girls, playing with a Barbie is much fun. But when you get older, you want something smarter and more modern,” says Vera Shepherd, a shop assitant in a New York toy store.
It is good news that on the international market. Barbie is still No. 1. although Mttel is selling ferwer Barbies int the United States three years, sales in other countries are still going up.in January 2009, Mattel openee its first Barbie store in Shanghai, where girls can shop, eat, drink or even become fashion designers for their own Barbies.
Mattel is planning big celebration for Barbie’s 53^rd birthday. Fashion designers from all over the world have been called to make new dresses for Barbie. How long will Barbie stay popuplar in the world of toy dolls? It is hard to say, but 【小题1】is surely not the age to retire(退休)。
61. Barbie’s family name is______.

Many children use the Internet to get useful knowledge and information, and to relax in their free time. But some of them are not using in a good way. Here are some rules to make sure you are safe and have fun on the Internet.
● Make rules for Internet use with your parents. For example, when you can go online, for how long and what activities you can go online.
● Don’t give your password (密码) to anyone else, and never leak out the following information---your real name, home address, age, school, phone number or other personal information. 
● Check with your parents before giving out a credit (信用) card number.
● Never send a photo of yourself to someone in e-mail unless your parents say it’s OK.
● Check with your parents before going into a chat room. Different chat rooms have different rules and attract different kinds of people. You and your parents must make sure it’s a right place for you.
● Never agree to meet someone you met on the Internet without your parent’s permission (允许). Never meet anyone you met on line alone.
● Always remember that people online may not be who they say they are. Treat everyone online as strangers.
● If something you see or read online makes you uncomfortable, leave the site. Tell a parent or teacher right away.
● Treat other people as you’d like to be treated. Never use bad language.
● Remember—not everything you read on the Internet is true.
【小题1】If you want a true friend on the Internet, you can ____________