*Question*
Three kids have been learning chemistry for only a few months. But they have already begun to challenge a world famous scientist! Li Weichi, Huang Runling, and Xiao Yan are from Zhongshan Huaqiao Middle School in Guangdong. They have just found a red cabbage that could be a new kind of acid-base indicator . They want it to take the place of litmus paper. "We've learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other." British scientist Robert Boyle discovered the use of litmus paper over 300 years ago. Now it is used widely in experiments all over the world. But when the kids did some experiments in class last winter, they saw that the litmus paper didn't turn very blue with base matter. It's hard to get a clear result. Will there be a better indicator than litmus paper? The three kids decided to try and find out! How? They went to collect over 40 plants in parks, gardens and markets. Then they ground leaves, flowers and stems to get the pigments from them. The kids mixed pigments with acid and base. They spent months watching carefully to see which paper showed the best colour change. They decided it was the litmus paper! "It's our first scientific journey, Huang said, "But it makes me want to try harder." The story mainly tells us _ . A) how to make litmus paper B) about the three kids' spirit C) scientists were wrong D) the kids are heroes
**Answer**
B

*Question*
Hello! I'm Tom. Here is a photo of my friend. His first name is Mark. His last name is Hand. He is English. His school ID card number is 19922.My school ID card number is 12299. That's interesting . Look at the photo! He is in a black and red jacket. His backpack is blue, and his watch is yellow. A baseball is in his hand .His telephone number is 235-3577. Mark's backpack is _ . A) yellow B) black C) blue D) green
**Answer**
C

*Question*
Radio, telephone and TV are widely used in the world. When you turn on the radio, you can listen. But when you use telephone, not only can you listen to others but also you can chat with them, however, you can't see anything at all. TV is much better than both of them. People can watch TV and listen to it, but they can't take part in what they see. Today, some people are using a type of telephone called vision-phone . With it, two people who are talking can see each other. It is better than radio, telephone or TV. Vision-phones can be of great use when you have something to show the person whom you are calling. It will be helpful in people's life. Some day you may be able to call up a library and ask to read a book on your vision-phone. You may be able to do some shopping too. Perhaps in the future, people will use vision-phone. ,. According to the passage, we can guess that the _ was invented last. A) radio B) vision-phone C) telephone D) TV
**Answer**
B

*Question*
Vanuatu is an island nation in the South Pacific. It is one of the smallest countries in the world. But for those who are interested in adventure and sport, there is a lot to do. Vanuatu's islands offer visitors two of the most exciting and dangerous activities in the world: volcano surfing and land diving. Volcano Surfing On Tanna Island, Mount Yasur rises 300 meters into the sky. Yasur is an active volcano, and it erupts almost every day, sometimes several times a day. For centuries, people have climbed this mountain to visit the top. Recently, people have also started climbing Yasur to surf the volcano. In some ways, volcano surfing is like surfing in the sea, but in other ways it's very different. Volcano surfers try to escape the erupting volcano--without getting hit by flying rocks! It's fast, fun and dangerous--the perfect extreme sport . Land Diving Most people are familiar with bungee jumping, but do you know bungee jumping started on Pentecost Island in Vanuatu and is almost fifteen centuries old? The activity, first called land diving, is part of a religious ceremony . A man ties tree vines to his legs. He then jumps head-first from a high tower to touch the earth with the top of his head--without breaking the vine. Every spring, island natives (men only) still take part in this amazing activity. What is the purpose of the passage? A) To tell people not to do dangerous sports. B) To explain what volcano surfing and land diving are. C) To talk about the world's best volcano surfer and land diver. D) To compare activities in Vanuatu with sports in New Zealand.
**Answer**
B