Read the following article and select the best answer. Article: Motorists who used to listen to the radio or their favorite tunes on CDs may have a new way to entertain themselves, after engineers in Japan developed a musical road surface. A team from the Hokkaido Industrial Research Institute has built a number of"melody roads,"which use cars as tuning forks to play music as they travel. The concept works by using grooves .They are cut at very specific intervals in the road surface. The melody road uses the spaces between to create different notes. Depending on how far apart the grooves are, a car moving over them will produce a series of high or low notes, and designers are able to create a distinct tune. Paten documents for the design describe it as notches "formed in a road surface so as to play a melody without producing simple sound or rhythm and reproduce melody-like tones". There are three musical strips in central and northern Japan--one of which plays the tune of a Japanese pop song. Reports say the system was invented by Shizuo Shinoda. He scraped some markings into a road with a bulldozer before driving over them and found that they helped to produce all kinds of tones. The _ speed for melody road is 44kph,but people say it is not always easy to get the intended sound. "You need to keep the car windows closed to hear well,"wrote one Japanese blogger."Driving too fast will sound like playing fast forward, while driving around 12mph[20km/h]has a slow-motion effect, making you almost car-sick." Question: According to the passage, melody roads use _ to create different notes. - cars - grooves - spaces between intervals - bulldozers
spaces between intervals

Read the following article and select the best answer. Article: Billy and Bobby were small boys. They were brothers, and they often fought each other. Last Saturday their mother said to them, "I'm going to cook our lunch now, go out and play in the garden......and be good." "Yes, Mum," the two boys answered, and they went out. They played in the garden for half an hour, and then Billy ran in. "Mum," he said, "Bobby's broken a window in Mrs Allen's house." Mrs Allen was one of their neighbours. "He's a bad boy," his mother said. "How did he break it?" "I threw a stone at him," Billy answered, "and he quickly moved down." Question: Mrs Allen was _ . - Billy's mother - their neighbour - their mother - Bobby's aunt
their neighbour

Q: Read the following article and select the best answer. Article: It is surprising that eating three meals a day--breakfast,lunch and dinner-has been a custom only since 1890. Before this time,people only had two meals a day--breakfast and dinner. In the 16th century,breakfast was only to break one's fast . But 200 years later it had become a large meal,not just for family,but for numbers of guests as well. It was a social event. It began at 10 a.m. and lasted until 1 p.m. Then breakfast began to be less popular. It became,instead,a lighter meal and was taken at a much earlier hour. By 1850 it had been pushed back to 8 a.m. and became a family meal. Dinner,however,went to the other way. In the 16th century it was eaten at 11 a.m. Years later,it had moved to the early afternoon,then to 5 p.m. By 1850 dinner time had reached 7 p.m. Lunch is a recent idea. It first appeared as a snack to fill the gap between breakfast and dinner. Question: Breakfast became a family meal since the _ century. - 17th - 19th - 16th - 18th
A: 19th

Question: Read the following article and select the best answer. Article: For the first time, scientists have found a planet beyond the solar system that not only is the same size as Earth, but has the same proportions of iron and rock, a key step in an ongoing quest to find potentially habitable sister worlds. The planet, known as Kepler-78b, circles a star that is slightly smaller than the sun located in the constellation Cygnus , about 400 light years away. Kepler-78b was discovered last year with NASA's now-idled Kepler space telescope, which detected potential planets as they circled in front of their parent stars, blocking a bit of light. That measurement not only revealed that Kepler-78b was ly small, with a diameter just 20 percent larger than Earth's, but that it was practically orbiting on the surface of its host star. Scientists do not know how the planets ended up so close to their host stars. While the planet's presumably molten surface and hot temperatures make it ill-suited for life, two independent teams of astronomers jumped at the opportunity to follow up the discovery with ground-based measurements to try to determine the density of Kepler-78b. In two papers in this week's journal Nature, the teams report that not only were they successful, but that they came to the same conclusion: Kepler-78b has roughly the same density as Earth, suggesting that it also is made primarily of rock and iron. Kepler-78b is among a dozen or so recently discovered small planets that orbit very close to their parent stars. Kepler-78b, for example, completes an orbit in just 8.5 hours. Question: Scientists are still not sure about Kepler-78b _ - whether it is a place suitable for life to live on - why it circles so close to its host star - how long it takes to orbit its parent star in a circle - what it basically consists of
Answer: why it circles so close to its host star

(Question)
Read the following article and select the best answer. Article: The producer of a new Indonesian movie about President Obama's childhood years in Jakarta is hoping that interested Americans will flock to see the film, Little Obama, in theatres across the country. Little Obama is the creation of Damien Dematra, an Indonesian writer and artist who has worked on the project since November when he was struck with the idea of writing about the time a young Obama lived in Jakarta with his mother and stepfather in the late 1960s and early 1970s. The film is based on a novel published in March Obama Anak Menteng, and focuses on the president's childhood friendships in Indonesia. The novel and the film are fictionalized(-) accounts of the president's time in Jakarta and are based on interviews with people who are childhood friends and neighbours of Mr. Obama. Many Indonesians share a deep pride about a man who spent part of his shaping years in the country and went on to become U.S. president. The film star is a 14-year-old Hasan Faruq Ali, an American who has lived in Indonesia with his family for about 10 years. Like the president, he is the son of a white mother and a black father. Since filming began, he has been under the shine of media attention. "My whole life changed overnight," he says. The film, which was made on a budget of $1 million, won't get its first public screening until Wednesday, but ads for the movie on YouTube have got a few thousand hits. It isn't clear whether Little Obamawill get a U.S. release , but the film's producer says he is in talks with a U.S. distributor . Question: What is the film Damien Dematra produced mainly about? - The friendship between America and Indonesia. - The political views of Obama from his childhood. - The determination and hard work of young Obama. - Mr. Obama's friends when he was young in Indonesia.
(Answer)
Mr. Obama's friends when he was young in Indonesia.