根据短文理解，选择正确答案。

    Every minute，someone is setting up an Internet company somewhere, in the world． Each one is searching for the one great idea that could make his web company click in a big way．And they are trying all kinds of tricks to attract people towards their websites．While some websites offer sounds，cartoons and amazing photos on screen to make their sites almost a movie-like experience for the viewers，others provide free downloads and competitions．

    A company in California，US，has decided to offer online smells to people who visit its website．

    That is，if a pizza image comes on screen，your nose will catch the smell of bread and cheese！All you need to do is to connect a device（设备）called “iSmell” with your computer．This smart little device contains（包含）some chemicals that can create different kinds of smells．

    The company has invented software that changes the chemical composition（成分）of different smells into digital signals(数字信号）．An onscreen image，which is programmed with the proper digital signal，will start the“ iSmell" device．The device will use the software to change' the digital signal again and let go of the correct smell．This device reads the digital smell code（代码）from the website and creates the proper smell from its store of chemicals．This smell is then made to blow softly in the direction of the user with the support of a small fan．

    In order to let go of the correct smell，the company has created a “Scent Registry”，which contains a digital index of thousands of smells．The company plans to allow website developers to integrate（合成）the proper smells in digital code to their games and images．The company is also hoping that Hollywood filmmakers will use the smell technology in their movies．Imagine audiences getting the smell of rocket fuel as a spacecraft takes off on the cinema screen！Of course，filmmakers will have to be careful not to shoot in dirty neighborhoods，which have a lot of rubbish lying around．

    Sun bears(马来熊)are the smallest of the world's eight bears species(物种). They have a black coat and a white or golden colour on their bodies. Their homes are in the tropical(热带雨林)of Southeast Asia. They live in trees and eat both plants and animals. They can grow to be 1.4 metres in height and 65 kilograms in weight. They usually live alone and are happy to spend most of their time by themselves.

    Scientists studied sun bears in the Bornean Sun Bear Conservation Center. They found that although sun bears live alone, they have developed a surprising social skill. They can copy (模仿) other sun bear's facial expression (面部表情) as a form of communication. They can even copy exact muscular (肌肉的) movements that other sun bears make— such as making a face.

    The ability to copy facial expressions is found in humans, gorilla's (大猩猩), some monkeys and some other animals. But until now, only humans and gorillas have the ability to exactly copy facial expressions. However, scientists found that sun bears can copy facial expression as well as humans and gorillas. This surprised them because sun bears are alone and they have no close relationship with human beings.

    Although they live alone in the wild, the sun bears in the study often played gently with each other. Sometimes they played with faster actions as hitting and biting. Scientists are still not sure what messages the sun bears were sending to one another.

Computers make people's lives really easy. People can use their computers for working, {#blank#}1{#/blank#} (shop), or playing games. Laptop (笔记本) computers make people's lives even {#blank#}2{#/blank#} (easy) as people can take laptops anywhere. They can work, shop, or play games any place {#blank#}3{#/blank#} any time. {#blank#}4{#/blank#} there is a problem with laptops. People can {#blank#}5{#/blank#} (burn) by them!

People who sit with laptops on {#blank#}6{#/blank#} (they) legs for hours and hours have noticed they get dark marks on their legs. The hot laptop is toasting the skin. {#blank#}7{#/blank#} (doctor) have noticed more people show up with "toasted skin syndrome (综合症)". The marks are not {#blank#}8{#/blank#} (danger), but they look strange because they are just in one spot on people's legs.

Companies that make computers tell people not {#blank#}9{#/blank#} (let) warm computers touch bare skin for a long time. Wearing pants and putting a laptop's case under the laptop is {#blank#}10{#/blank#} (usual) enough to protect one's skin from the computer's heat.

Paul Roberts, a 15-year-old boy, lives in New York. Like thousands of other American students, he usually goes away to a summer camp during the school holidays.

These camps are just for teenagers, without their parents, and Paul always has a great time. But this summer he's doing something different-he's going on an adventure* holiday in Hawaii.

It's a camping holiday for three weeks in Hawaii, for kids from 14 to 

18. He's leaving on July 23^rd and coming back on August 12^th.

First, they're putting on backpacks and hiking through the forest in Hawaii. The place is very beautiful, with huge waterfalls and fascinating beaches. After this five-day walk, they're staying for two days in a valley*. The main activity here will be surfing. Paul doesn't know how to surf, but instructors will teach him how to do it, and he's really looking forward to this.

Then the organizers are providing mountain bikes and they're going for long rides-about 30 miles a day, around one of Hawaii's mountains. And on one day they're meeting a local Hawaiian family and helping them to plant fruit trees on their farm. After that, they're sailing for three days by the coast, and they'll have a chance to swim with dolphins and sea turtles!

This sounds amazing. Finally, they're going out for three days in sea kayaks*-they're visiting sea caves and swimming too.

Every night for the three weeks, they're camping in tents*, usually on the beach. This isn't a holiday for couch potatoes! They say the kids have to be fit, and of course they have to know how to swim and ride a bike. The kids can't use the computer or pad during the three weeks, but it's going to be a really special experience.

Do you know World Book Day? It is on April 23rd every 1 . Many countries 2 it. On that day, in the UK, students can 3 books at a special price (价格). There is a discount (折扣) in 4 kinds of books.

In China, we also celebrate World Book Day. Some people are 5 , but they still do a lot of reading and they encourage (鼓励) young people to 6 more books. "Books can't 7 the world, but people can change the world by changing themselves if they often read" they said.

In our school, we celebrate World Book Day, too. We have a Reading Week. The 8 and students read lots of books. Some of 9 are from our homes. We 10 them with each other.

We drink one of the world's most popular drinks—tea—on May 21, International Tea Day. We all know that China is the birthplace of tea 1 . But do you know about the tea cultures of some 2 countries? 

Tea was brought to 3 from China in the ninth century. Then in the late 12th century, the Japanese monk（僧侣）Eisai 4 tea to Japan from China again, Eisai wrote a book praising tea as a 5 that was especially good for the heart. The custom（习俗）of tea—drinking later became an important part of Japanese culture. In Japan, 6 tea is an art. People use beautiful tea bowls and 7 the peace and calm of the tea room. 

India is one of the largest tea producers in the world. It also learned the art of tea-drinking from China centuries ago. Tea is very 8 in India. In fact, 70 percent of the tea it produces is loved 9 its own people. "Chai" is the Hindi（印地语）word for tea. Traditional Indian chai is a type of 10 tea. But unlike Chinese black tea, chai is 11 together with strong spices such as ginger（姜）. 

Turkey also has a tea culture. If you ever find 12 in Turkey, one thing you have to do is to enjoy special tea there. Tea was brought to the country 13 China in the nineteenth century. The traditional Turkish tea cup is in the shape of a tulip（郁金香）. The tea is 14 served very hot and one has to hold the cup by its lower rim（边沿）. Most often, salty or sweet biscuits, 15 "kurabiye", are served along with the tea.