Read the following article and select the best answer. Article: It seems that the Great Wall is the place to rock . There will be two parties held on the Great Wall this month. Great Wall I The latest Great Wall party is sponsored by the Club and Elektrobeat and held at Jinshanling. Local DJ Mark, as well as guests Slab from Australia, Usami and Bobby from Hong Kong will sing at the party. All drinks are priced at 20 yuan($ 2.4). Tickets: 200yuan($ 24), including bus ride there and back plus entrance fee to the Great Wall. T/D: 8p.m. to 2 a.m., Sept. 20. Pre-sale tickets are to be booked at: Public Space: 6416-0759; Neo Lounge: 6416-1077. Buses: Leave at 5 p.m. on Saturday, Sept. 20 from Neo Lounge, 99 Xinfuncun Zhonglu, Sanlitun, Chaoyang District. For more info: www. elektrobeat. com Great wall II The other party at the end of this month at Jinshanling will be started with live performances by Askar, Brain Failure, Longkuan, Supermarket, Mr. Zhou, Beijing Talking and the Yi band. Dance till dawn to the wonderful sounds of DJs Ben, Mickey Zhang, Will, Cheese, Gao Hu and Huang Weiwei. T/D: 8 p.m. to 2 a.m., Sept. 27. Tickets: 350 yuan ($ 42) or 300 yuan ($ 36) for groups of 10 or more, 500 yuan ($ 60) at the door and VIP tickets 800 yuan ($ 72), transportation included. Buses: Depart from the north gate of Wbrkers' Stadium at noon, 2 p.m., 4 p.m., Sept. 27. For more info: contact Li Zhenhua at lah@msgp. Org or call 133-2119-1731. Question: What day of the week is September 27? - Saturday. - Sunday. - Weekday. - It can't be known.
Saturday.

(Question)
Read the following article and select the best answer. Article: Last week, we explained that the planet Mars has passed "opposition. "It passed a point opposite the Sun. This week, we tell about the planet's surprising motion among the stars. For thousands of years, people have recognized that planets travel among the stars. The planets generally follow the path taken by the Sun through the sky. The Sun's path is called the ecliptic. The groups of stars along the ecliptic are called the Zodiac. The motion of the planets can be confusing at times. Everyone knows the Sun rises in the east and sets in the west. But this is caused by the turning motion of the Earth. Planets generally move from west to east. However, Mars will appear to move backward for about two months this year. This happens because the Earth is overtaking Mars on its way around the Sun. Mars began its backward, or westward, motion on May 11th, It will start moving eastward again on July 19th. Mars' apparent motion has been a mystery to astronomers for hundreds of years. Most early theories of the solar system argued that the Sun and planets turned around the Earth. But the sudden westward motion of Mars presented a problem. Why would Mars move west for two months when it nears "opposition"? In 1543, a Polish church worker named Nicolas Copernicus published a different theory. His theory said the Earth and planets moved around the Sun in perfectly circular orbits. Copernicus' theory was simpler. But his Sun - centered system still did not explain the observed motion of Mars very well. Finally, a German mathematician named Johannes Kepler published a complete theory of the motion of the planets in 1619. He had carefully studied the motion of Mars for many years. Johannes Kepler discovered that the planets do not move in circular orbits around the sun. Instead, they travel in flattened orbits called ellipses. Mars' elliptical orbit is the cause of its unusual brightening this year and its apparent large size. During the next several weeks, you can see for yourself why the mysterious motion of Mars has... Question: From the passage we can learn that_. - the sun and planets generally travel westward - Kepler studied the orbit of the planets in 1619 - Copernicus' theory well explained the motion of Mars - the Earth's turning motion causes the sun to rise in the east
(Answer)
the Earth's turning motion causes the sun to rise in the east

Read the following article and select the best answer. Article: A meteorite flew fast across the sky and exploded over central Russia on Friday, raining fireballs over a vast area and causing a shock wave that smashed windows, damaged buildings and injured l,200 people. People heading to work in Chelyabinsk heard what sounded like an explosion, saw a bright light and then felt the shock wave. According to Russian space agency Roscosmos, the fireball, travelling at a speed of 30km per second, had burnt very brightly across the horizon, leaving a long white trail that could be seen as far as 200km away. Car alarms went off, thousands of windows shattered and mobile phone networks were disrupted. "I was driving to work, it was quite dark, but it suddenly became as bright as if it were day," said Viktor Prokofiev, 36, a resident of Yekaterinburg in the Urals Mountains. "I felt like I was blinded by headlights." The meteorite, which weighed about 20 tons and may have been made of iron, entered Earth's atmosphere and broke apart 30-50km above ground, according to Russia's Academy of Sciences. The energy released when it entered the Earth's atmosphere was about several thousand tons, the academy said, the power of a small atomic weapon exploding. No deaths were reported, but the Emergencies Ministry said 20,000 rescue and clean-up workers were sent to the region after President Vladimir Putin told Emergencies Minister Vladimir Puchkov to ease the disruption and help the victims. The Interior Ministry said about l,200 people had been injured, at least 200 of them children, and most from broken pieces of glass."While events this big are rare, an impact that could cause damage and death could happen every century or so. Unfortunately there is absolutely nothing we can do to stop impacts." Question: The Russian government's response to the incident was _ . - a little slow but effective - quick and serious - cold and slow - quick but ineffective
quick and serious