London is the capital of Britain. It is located in the southeast plain of England. The Thames River goes through this city. The British have lived there for about 3,000 years. The Roman Empire intruded into Britannia Island in 54 BC. The Romans built the first wooden bridge over the Thames River. London is a world-famous cultural city. There are many famous cultural sites. It is one of the world's great tourist destinations. About eight million people visit London every year. The largest museum is the British Museum, which was built in the 18th century. There are many ancient cultural relics of Britain and of other countries in the museum. The London Tower stands on the southeast of Tower Mountain. It was once a palace, and it is now an exhibition center. Westminster Hall is located on the west bank of the Thames River and was built in 750 AD. It is the largest Gothic building of the world and was a palace in the past, too. The Clock Tower, which is about 97 meters high, is located northeast of the parliament. The famous "Big Ben" weighs about 21 tons and its big pendulum is about 305 kilograms. Hyde Park is one of the great parks in the world and it is in the west district of London. There is a free forum there and some people give speeches there every week. They can say almost anything, but they can't attack the Queen or support violent revolution. This passage is most probably taken from a website about _ . A) traveling B) kids C) museums D) Holidays
A
As they migrate, butterflies and moths choose the winds they want to fly with, and they change their body positions if they start floating in the wrong direction. This new finding suggests that insects may use some of the same methods that birds use for traveling long distances. Scientists have long thought that insects were simply at the mercy of the wind. Fascinating as their skills of flight are, migrating behavior has been difficult to study in insects because many long distant trips happen thousands of feet above ground. Only recently have scientists developed technologies that can detect such little creatures at such great heights. To their surprise, though, the insects weren't passive travelers on the winds. In autumn, for example, most light winds blew from the east, but the insects somehow sought out ones that carried them south and they positioned themselves to navigate directly to their wintering homes. Even in the spring, when most winds flowed northward, the insects didn't always go with the flow. If breezes weren't blowing in the exact direction they wanted to go, the insects changed their body positions to compensate(, ). Many migrating birds do the same thing. The study also found that butterflies and moths actively flew within the air streams that pushed them along. By adding flight speeds to wind speeds, the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour. The findings may have real-world applications. With climate warming, migrating insects are growing in number. Knowing how and when these pests move could help farmers decide when to spray their crops. It is not easy to study the migrating behavior of the insects because _ . A) the little creatures can fly very fast B) their flight is long and high above ground C) the wind's direction is hard to forecast D) they have no regular migrating courses
B
Q: As we all know,it was Thomas Jefferson who wrote the Declaration of Independence .He wrote it in two weeks,and after a few changes,it was accepted by the Congress.As a result,he became famous in America's history. Born in Virginia,Thomas Jefferson,a brilliant student at school and almost talented lawyer later,was much interested in politics. Jefferson was elected Governor of Virginia in 1779,and he was sent to France as the Representative of the American Government in 1784.Sixteen years later,at the age of 57,he was elected president after Washington and Adams. Far from a handsome man,he was is tall with long arms and big hands.Jefferson,who was an amusing talker in conversation,but a poor speaker,was generally good-natured. Jefferson was regarded as a defender of freedom Of America.As a president,he protected the right of speech.Interestingly enough,in his eight years as president,:Jefferson never said "No" to a bill !which the Congress had passed.He did a lot in organizing the new University of Virginia. Thomas Jefferson died on July the fourth,1826,the fiftieth anniversary of America's independence. Who wrote the Declaration of Independence? A) Thomas Jefferson B) Lincoln C) Washington D) Adams
A: A
*Question*
The end of the 2014 World Cup does not mean the end of the international competition in Brazil. A major football event which is known as RoboCup will be held in the coastal city Joao Pessoa. Teams of robots from around the world will take part in _ and play the game known as soccer in the United States. The robot teams are guided by teams of human beings. Watching robots play football is similar to watching children play the game. The kicks are not good, there are a lot of falls , and people are there to guide and support the robot players. Students of the University of Pennsylvania are trying for their fourth victory at the competition. The students have won the last three RoboCup competition in the Netherlands, Mexico and Turkey. Jian Qiaoli is one of the leaders of the University of Pennsylvania team. He says one goal he has set for his team is to make sure the robots can find the ball and know where they are on the playing field. And he wants the team to be able to better control the walking ability of the robots. They should pay more attention to the kicking ability, which is the key to winning the game. Qin He is another leader of the robot team. She says the abilities of the robots improve every year. The robots know the difference between the colors green and red, and they can decide where to go and where the ball is on the playing field. She says the robots are self-learning and don't need to be told what to do. If there are three robot players on the playing field at the same time, they will communicate with each other to decide different responsibility for each of them. They have very good team play right now. As long as the radar detection works well, the robots will be very competitive. So RoboCup will be an exciting technology competition. Each team develops their own software. Actually, it's a competition of who has the best software. Some RoboCup participants hope to develop a team of robots that can play against human beings. What's the best title for the text? A) The technology competition--RoboCup B) The international competitions in Brazil C) How to develop robot players? D) Can robot players play football?
**Answer**
A