*Question*
You know how much your telephone has changed over the past 10 years? Your car will change even more than that in the next 10 years. One of the biggest changes is that cars will drive themselves. "We certainly have the technology for it now."says Andrew Poliak of automotive technology supplier QNX."We expect self-driving cars to be a mainstream thing between 2020 and 2025." The American company Google has been working on self-driving cars for years. These cars are already on the roads in the United States and are truly self-driving. They have to steering wheels or pedals . Last week, the police ordered one of Google's cars to stop for driving too slowly on a public road. The car was not breaking any law, so no one was punished. Another American company, Tesla, added an "Autopilot" feature to its cars last month. With the Autopilot turned on, the vehicle drives itself. The car will speed up, slow down, _ and drive by itself. You can take over driving any time by turning the steering wheel or touching a pedal. The car uses sensors to know when driveway changing is safe and whether it should speed up or slow down. Tesla Autopilot is made for cross-country driving. It keeps you in the driveway and helps you avoid hitting other cars. It does not work well on local roads, for it will not stop at a red light or stop sign. Reporter Carolyn Nicander Mohr tried the Autopilot feature of a Tesla earlier this month. She had a hard time trusting the car to do what it should do. She thought about disabling the Autopilot feature many times during her trip. She wanted to take control at every bend in the road and hit the brake when the car in front of her slowed down. Yet the car drove perfectly. Other companies are working on self-driving cars, too. Marcedes-Benz, Audi, BMW.Volvo and Toyota all have plans for such vehicles. ,A, B, C, D. According to the text, Tesla Autopilot _ . A) is truley self-driving B) can sense traffic lights C) won't work on freeways D) isn't safe in crowded areas
**Answer**
D

*Question*
Chocolate is one of the most popular foods in the world. Many people choose it as a birthday gift. When a child gets a box of chocolate as a gift, he may feel happy. It is popular among people, especially among children. Chocolate tastes nice. People eat chocolate candy, chocolate cake and chocolate cookies. They also drink hot chocolate. Chocolate is made from cocoa beans. Here are some interesting things about cocoa beans. In the past, the Mayas and the Aztecs used cocoa beans as money because they were small, easy to carry, and not easy to find. A turkey cost ninety cocoa beans and a small rabbit cost thirty cocoa beans. They also cooked the beans and mixed them with water. Sometimes they added corn or hot pepper. They did not add sugar. The drink was very expensive. Only rich people could buy it. There are some different kinds of foods. Which is not mentioned in the passage? A) chocolate candy B) chocolate cake C) chocolate cookies D) chocolate ice cream
**Answer**
D

*Question*
Fifty-five years ago Barbie Millicent Roberts first came out in the world of toys. Since then, Barbie doll, as everyone called her, has become the most famous toy doll in history. Her parent, the Mattel Company, said that 90% of all American girls between 3 and 10 have at least one Barbie at home. However, Barbie is facing some trouble at present, There are many similar dolls on the market in competition with her. Another doll named Bratz, for example, came to life fifteen years ago. She looks more like today's pop stars with heavy makeup and miniskirts. It seems that Barbie has lost her magic among older girls. "For young girls, playing with a Barbie is much fun. But when you get older, you want something smarter and more modern," Says Vera Shepherd, a shopkeeper in a New York toy shop. It is good news that on the international market Barbie is still No. 1. Although Mattel is selling fewer Barbies in the United States these years, sales in other countries are still going up. In January 2009, Mattel opened its first Barbie store in Shanghai, where girls can shop, eat, drink or even become _ for their own Barbies. Mattel is planning big celebrations for Barbie's 55th birthday. Fashion designers from all over the world will make new dresses for Barbie. How long will Barbie stay popular in the world of toy dolls? It is hard to say, but 55 is surely not the age to retire . Barbie's trouble is that _ . A) it wears heavy makeup and miniskirts. B) other dolls are more popular with little girls. C) other dolls are trying to beat her in the market. D) it is more expensive than the other dolls.
**Answer**
C

*Question*
Our voice gives away a lot of information about ourselves. It can tell us our gender and age. And now, scientists say that it can also tell us our height. Scientists at Washington University, Indiana University and University of California found that listeners could accurately tell the height of speakers, just by their voices. And the key to this mystery is a sound known as the subglottal resonance . It _ with height and helps us build a mental picture of a person. "The best way to think about subglottal resonances is to imagine blowing into a glass bottle with water. The less water in the bottle, the lower sound," said John Morton, a scientist at Washington University. And it's the same for humans. The frequency of the subglottal resonance depends on the height. The taller we are, the deeper the resonance frequency is. In order to find out whether people could identify the resonance, scientists did experiments. A number of same-sex pairs of different heights were told to read the same sentence aloud. It was played back to listeners who had to choose which one of the pairs was taller. Then, other listeners had to rank the speakers from the shortest to the tallest. The listeners were able to identify the tall people 62.17% of time, much higher than a lucky guess. Why not try the experiment yourself? Find out if your tall friends have deeper voices. The best title of the passage might be _ . A) How to Be Taller B) Our Voice Tells Our Height C) An Experience about Voice D) Something about Subglottal Resonance
**Answer**
B