Read the article and select the best answer. Article: Fahad Azad, an engineer in India, invented a robot named DuctBot.The toy-car sized DuctBot measured 23 centimeters in length, 19 centimeters in width and 9 centimeters in height and weighs just two kilograms. The robot is designed to snake through dark, narrow air conditioning ducts and clean them.A pair of LEDs fitted on the robot light up the dirty scenery, so _ can be captured by a camera. In order to control it more easily, Mr. Azad chooses to fix DuctBot on wheels.The robot can clean off lots of dirt, as well as dead pigeons and insects.Keeping indoor air in good quality and monitoring carbon-dioxide levels in buildings with central air conditioning is a challenge.It is important in some places where clean air can mean a difference between life and death, such as hospitals.Dirty air has a bad influence on people's health. EPSCO, a Dubai-based company which specializes in improving indoor air quality, read about Mr. Azad's invention in a national newspaper after he had won an international robotics competition.EPSCO had cleaning equipment, but it needed someone to get into those ducts to do the dirty, dangerous work.Across India, for example, the task still falls to children.They are small enough to go through those ducts. In 2005, Mr. Azad who was still at university decided to do something about it.Six years later his own company, Robosoft Systems, has Bluestar, EPSCO and the Indian Navy, some leading air condition makers, as partners. Mr. Azad and his ten employees are currently exploring robot designs to examine oil tanks or sewage pipes.Their biggest challenge is to make the robots user-friendly enough.Mr. Azad hopes that the robot could eventually be operated not by engineers but by workers.There will be lots of difficulties they need to overcome in the future. Question: What can the Ductbot do for us? Options: A: Clean off the dirt in the ducts. B: Control the central conditioning. C: Reduce carbon-dioxide in buildings. D: Protect more animals in city.
A

Read the article and select the best answer. Article: Outline programme for the State Visit of the President of The People's Republic of China, Mr XiJinping, accompanied by Madame Peng Liyuan, 20 to 23 October 2015. MONDAY 19 OCTOBER The President of The People's Republic of China will arrive privately in the UK on Monday evening, 19th October, at Heathrow Airport. They will be greeted by The Viscount Hood, Lord-in-Waiting. TUESDAY 20TH OCTOBER The Queen will formally welcome the President at the Royal Pavilion on Horse Guards Parade. The President will inspect the Guard of Honour. Following a private lunch at Buckingham Palace, given by The Queen, Her Majesty will invite the President to view an exhibition in the Picture Gallery of items from the Royal Collection relating to China. In the evening The Queen will give a State Banquet at Buckingham Palace for the President. Her Majesty and the President will both make speeches at the start of the banquet. WEDNESDAY 21 OCTOBER President Xi will meet with the Prime Minister, David Cameron, at No.10 Downing Street for a bilateral meeting. They will visit the UK-China Business Summit at Mansion House, which will focus on investment, infrastructure and innovation. Then, the President will visit Huawei Technologies, where he will receive presentations looking at Huawei's 14 years in the UK, its innovation work with UK partners and the latest technology trends. In the evening, the President will attend a banquet at Guildhall given by the Lord Mayor and City of London Corporation. The Lord Mayor and the President will both make speeches at the end of the banquet. THURSDAY 22 OCTOBER The President will formally bid farewell to The Queen at Buckingham Palace in the morning. Afterwards, he will join a Confucius Institute conference. Later he will fly up to Manchester ahead of the final day of the State Visit. FRIDAY 23 OCTOBER In the morning, the President will visit the National Graphene Institute at the University of Manchester. Later he will visit the Manchester City Football Group. The Lord Chamberlain will bid farewell... Question: We can learn from the passage that _ . Options: A: speeches are usually given at the start of a Banquet B: The Queen will greet and see off President Xi at the Airport C: a welcome ceremony and farewell ceremony will be arranged by the UK D: Huawei Technologies has been cooperating with British for more than a decade
D

Read the article and select the best answer. Article: Bali is an Indonesian island rich in indigenous culture. A lot of people say that Balinese culture is unique and that the people of Bali have always been content with the "now". If you ask a Balinese person what heaven is like, the probable answer will be "just like Bali". This only goes to show that most Balinese people are happy to be where they are and never worry. One factor that contributes to this laidback lifestyle is the culture of close family ties in Bali. In the Balinese culture, support is always available. Balinese extended families are so tightly knit that all members usually reside in the same complex. Balinese culture is based on a form of this religion, which is called "Hindu Darma". This religion reached the island during the eleventh century. Most of the family customs and traditions as well as community lifestyles of the Balinese people are influenced by this.The religious influence even expands widely into the arts, which makes Bali distinct from the rest of Indonesia. In spite of the fact that tourists flood to the island every year, Balinese people have managed to conserve their culture. Almost every native of Bali is an artist in some form or another. Parents and villagers have passed on their skills to their children, who all seem to have preference either for music, dance, or painting. Another remarkable mark of the Balinese culture is the series of ceremonies and rituals known as the Manusa Yadnya. This marks the different stages of Balinese life. Cremation is very popular on this island--and unlike in the West, death is a joyous and color1ful event for the Balinese. Question: Bali is distinguished from the rest of Indonesia by _ . Options: A: people's tight family relationship. B: the family customs and traditions. C: people's great affection for religion. D: the influence of Hinduism on their culture.
D