Read the following article and select the best answer. Article: Xinhua News Agency-The International Conference on Power Engineering (ICOPE) 2013, organized by the Chinese Society of Power Engineering, School of Energy and Power Engineering, China-EU Institute for Clean and Renewable Energy, opened in Wuhan, on Oct 24. More than 300 energy experts, scholars and businessmen from countries and areas including the United States, Japan, the EU, Australia, South Africa, Thailand, Nigeria, Arab and China are attending the three-day academic conference on the world's energy problems. Professor Zheng Chuguang, from the School of Energy and Power Engineering at Huazhong University of Science and Technology, gave a speech on the development of oxygen fuel technology in China, and said that settling the problem of cost ranks highest. George Saxon, vice-president of Conco Systems Inc, US, presented a report on the topic of Energy Engineer to Shape the Future. He said that the company's research and innovation are of great significance for the future and already contribute to reducing costs and improving efficiency . Professor Didier Mayer from the Ecole des Mines de Paris, France, spoke about "Wind Energy R&D Line Based on the Global Renewable Energy Status", and Professor Yasuo Koizumi of Shinshu University in Japan and Li Chun-Zhu of Curtin University of Technology in Australia also gave speeches at the conference. The academic meetings are expected to cover topics from various fields. In addition, the participants will discuss the most advanced academic research around the world, the latest progress and development trends in the various fields. The conference has attracted 232 academic papers, with 176 papers from China, and 56 from abroad. Question: What is the purpose of the passage? - To discuss the world energy problems. - To introduce to readers some energy experts. - To introduce an international energy conference. - To show the world's great concern about environment.
To introduce an international energy conference.

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Read the following article and select the best answer. Article: Singing had always been an important part of Gloria Estefan's life. " Since I was three years old, I sang. I sang everything," Gloria said. "Gubans," she added, "are a musical people." Gloria was born in Cuba in 1957. Her family left the country just before Fidel Castro came to power. In Miami, where the family settled, many people did not accept Cuban immigrants. In first grade, she spoke little English, but she worked hard to learn the language. Six months after she entered school, she won an award for reading in English! When Gloria was ten , her father returned from the Vietnam War. Soon, the family realized he wasn't well. They soon found out that he was badly ill. Her mother went back to teaching at school to support the family. Gloria cared for her father and her younger sister. She still made the honor roll, and she still had her music, but Gloria was lonely. However, when the band leader Emilio Estefan came to speak at her high school, Gloria sang for him. He asked her to join his band. It was the beginning of the Miami Sound Machine. Within a few months, the Miami Sound Machine was the top band in Miami. In 1978, Gloria and Emilio married. At first, the Miami Sound Machine was known only in Miami. Then the band signed with CBS Records. Estefan and his band became stars. Since then, the Miami Sound Machine has sold millions of records. Estefan has done more than just singing when Hurricane Andrew hit central Florida in 1992. She used only two weeks to organize an all-star concert that raised $ 2 million for the people who suffered in the hurricane. "We needed a party after that _ ," she said. Estefan said, "You have to stay true to the music you really love to do. There will always be people who will tell you, 'that won't work.' You've got to be firm in spite of difficulties. Stick to it----that's the main thing." Question: This passage mainly tells about Estefan's _ . - Cuban background - happy marriage - music style - life story
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life story

Question: Read the following article and select the best answer. Article: "Get your hands off me, I have been stolen," the laptop, a portable computer, shouted. That is a new solution to laptop computer theft (the crime of stealing): a program that lets owners give their property a voice when it has been taken. The program allows users to displayalerts (warning)on the missing computer's screen and even to set a spoken message. Tracking software for stolen laptops has been on the market for some time, but this is thought to be the first that allows owners _ . Owners must report their laptop missing by visiting a website, which sends a message to the model: a red and yellow "lost or stolen" sign appears on its screen when it is started. Under the latest version of the software, users can also send a spoken message. The message can be set to reappear every 30 seconds, no matter how many times the thief closes _ . "One customer sent a message saying, 'You are being tracked. I am right at your door'," said Carrie Hafeman, chief executive of the company which produces the program, Retriever. In the latest version, people can add a spoken message. For example, the laptop's speakers will say: "Help, this laptop is reported lost or stolen. If you are not my owner, report me now." The Retriever software package, which costs $29.95 but has a free trial period, has the functions of many security software programs. Owners can remotely switch to an alternative password immediately if they fear that the thief has also got hold of the access (, ) details. If a thief accesses the Internet with the stolen laptop, Retriever will collect information on the Internet service provider in use, so that the police can be alerted to its location. Thousands of laptops are stolen every year from homes and offices, but with the use of laptops increasing, the number stolen while their owners are out and about has been rising sharply. Other security software allows users to erase data remotely or lock down the computer. Question: Which of the following can best sum up the main idea of the passage? - With no Retriever, thousands of laptops are stolen every year. - A new software provides a means to reduce laptop theft. - Retriever has helped to find thieves and lost computers. - A new program offers a communication platform with the thief.
Answer:
A new software provides a means to reduce laptop theft.