Read the following article and select the best answer. Article: The world's biggest Internet search engine, Google, has proven once again to be King of the Web. Users can download "Google Wi-Fi" software and then enjoy free Wi-Fi service available in some US cities since last Tuesday. Wi-Fi is short for "Wireless Fidelity" . It allows laptop computers and personal digital assistants to the Internet at high speed by radio signal. A person with a Wi-Fi enabled computer can connect to the Internet when near one of the network's access points. The place covered by one or several access points is called a hotspot. Google has already set up two "hotspots" in the US city of San Francisco which provide a free Wi-Fi service. The Wi-Fi technology even allows users to enjoy a free Internet phone service. Some scientists argue that Wi-Fi may replace mobile phone networks. Wi-Fi is still limited to a few cities, where there are "hotspots". But its capability of sending information has already done better than that of the mobile phone network, even that of 3G(Third Generation Telecommunication Technology). Some scientists have started to call Wi-Fi 4G. In addition to a high speed Internet connection, Wi-Fi has other advantages compared to mobile phones. Wi-Fi is global. The same Wi-Fi system works in different countries around the world. Different from using cell phones, you don't need to change computers to use Internet phones when you go to other places and most importantly, many Internet phones cost you nothing at all. Question: Which of the following is NOT true of Wi-Fi? - The high speed Internet connection. - Many free Internet phones. - Being used in all the US cities. - Using the same computers for Internet phones when you go to other places.
Being used in all the US cities.

Read the following article and select the best answer. Article: I'm sure you know the song "Happy Birthday". But do you know who wrote the song and for whom it was written? The retired professor, Archibald A. Hill in Lucasville, USA could tell us the story. Ninety-seven years ago, two of Mr. Archibald Hill's aunts, Miss Patty Hill and Miss Mildred Hill were asked to write some songs for a book called "Song Storied for the Sunday Morning". Miss Patty Hill and Miss Mildred Hill were both kindergarten teachers then. They loved children very much and wrote many beautiful songs for the book. One of them was the famous "Good Morning to You." The song said, "Good morning to you, good morning to you, children, good morning to all." This song was very popular at that time among kindergarten children. But not many grown-ups knew it. A few years later little Archibald was born. As his aunt, Miss Patty Hill sang the song "Happy Birthday" to the melody of "Good Morning to you" to her little nephew . She sang the song like this: Happy birthday to you! Happy birthday to you! Happy birthday, Archie! Happy birthday to you! Miss Patty Hill and her sister had never expected that this song would become so popular, but it really did. People all over the world like the song because of its simplicity in tune and friendliness in words. Question: The song "Happy Birthday" has a history of _ years. - 97 - more than 90 - less than 90 - about 90
about 90

Q: Read the following article and select the best answer. Article: When I saw a big handmade signboard "Welcome Yuxin" at the airport,I knew I had found a caring family at the other side of the world -- the United States. My host mom had already decorated my room for me. There was a doll on one side of the room,and a bookcase full of books on the other -- they had heard I loved reading. Mom had also prepared a keyboard for me,since she knew that I played the piano. My life in the family did not go so well at first. Because I am the only child in my family in China,I was not used to having two younger kids -- Zachary and Grace--running around me yelling all the time. Mom had a serious talk with me about this problem on a Sunday afternoon. She told me,"You can't just come home from school every day,go to your room and do your homework. You need to be a part of this family. You need to play with my kids for at least an hour. " This rule was very annoying at first. I did not have much experience playing with children. However,the more time I spent with the kids,the more I grew to love them. We played games and read books together. I even taught them Chinese. Thanks to Mom's rule,I began to feel like I was really part of the family. Mom also inspired me to live a healthier life. She got up early every morning to go running. On weekends,she took the whole family to visit parks or go camping. I did not like sports much when I was back home,but now I love to join all kinds of sports. I am healthier and more confident too. With my American family,I found joy and laughter. I learned to live with energy and optimism ,thanks to the care and responsibility of my loving American parents. Question: The passage is mainly about _ . - the cultural differences Yuxin experienced in America - how Yuxin learned to get along with younger kids in America - how much Yuxin's caring host family in America changed her - various difficulties Yuxin met in America
A: how much Yuxin's caring host family in America changed her

*Question*
Read the following article and select the best answer. Article: Some good news for online holiday shoppers: bargain-hunting binges will drive prices down as web-based retailers compete to offer bigger discounts, marketing researchers predict. A recent survey by Shopzilla found that nearly 84 percent of online retailers would offer Cyber Monday discounts, up 12 percent from last year. Cyber Monday, the first Monday after Thanksgiving, is the online response to Black Friday, the day after Thanksgiving when stores are traditionally flooded with customers, some of whom camp at the entrances overnight to take advantage of discounts. However, in the current economic climate, online retailers have felt pressure to offer sales and discounts even before Black Friday. But how online retailers decide to offer those big savings isn't a simple matter of trying to attract the consumers who are watching their wallets, Bohlmann of Sabanci University in Istanbul says. Online stores will also pay attention to the deals their competitors are offering, potentially leading to price wars between certain retailers to attract all those potential bargain-hunting customers. Online shoppers can be divided into two types, Bohlmann said, --switchers and --loyals. Switchers compare prices between retailers and go for the cheapest one, while loyals stick to one brand or store. It almost doesn't matter what price you charge. Online retailers will look at the percentage of switchers and loyals they have in order to decide whether to offer discounts. The more switchers they have, the more likely they will offer discounts. But retailers don't just look at the percentage of their own customers; they also look at the competition. If one online store has a higher percentage of loyals than the competitor, it can afford to keep prices higher. On the contrary, if it has a higher percentage of switchers than the competitor, it might want to lower prices. Question: It can be inferred from the text that _ - retailers should know more about customers' interest - There will be no shoppers who go out in crowds - Barnes&Noble's prices are lower than other companies' - Retailers like the switchers more than the loyals
**Answer**
retailers should know more about customers' interest