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Four Free Mobile Apps to Help You Learn English Faster
Have you realized that you can put your smartphone to really good use for learning English? Here are 4 free mobile apps that will help you do just that.
Hello English
It covers all the aspects of language learning, including vocabulary, translation, grammar, spellings, spoken and reading skills. It uses interactive games to teach different English lessons and offers new audiobooks, latest news, and books. However, you should already understand basic English structures and alphabets, for the app can¡¯t help you learn English from scratch(´ÓÁ㿪ʼ).
Duolingo
If you want to learn English from scratch, then this is the app you are looking for. Duolingo uses interactive games to help you learn English. For beginners, the app focuses on helping you learn verbs,
phrases and sentences.
Lingbe
If you are ready to practice your spoken skills in the real-world, you¡¯ll need Lingbe. It¡¯s a community-based app where people help each other and share their native languages. It connects you with real people on call who are native English speakers.
HelloTalk
HelloTalk is similar to Lingbe as it connects you with native speakers to help improve your language skills. However, it adds a few extra functions that might interest you. You can view the information about users to find a match that interests you. Additionally, you can also send text and audio messages, and even do video calls with other people.
If you are a beginner, start from Duolingo and then use Hello English to take full command over the language. For fluent spoken English learners, you can try out Lingbe or HelloTalk.
21. What should you already understand to use Hello English? A. Good reading and writing skills. B. Basic listening and speaking tips. C. Different English lessons and books. D. English letters and basic structures.
22. Which app is the best choice for an English beginner at first? A. Hello English. B. Duolingo. C. Lingbe. D. HelloTalk.
23. What can you do on Lingbe? A. Read the latest news. B. Enjoy the interactive games. C. Practice your spoken English. D. Talk with native speakers in the flesh.
B
When a driver slams on the brakes to avoid hitting a pedestrian crossing the road illegally, she is making a moral decision that shifts risk from the pedestrian to the people in the car. Self-driving cars might soon have to make
such ethical(µÀµÂµÄ) judgments on their own ¡ª but settling on a universal moral code for the vehicles could be a tough task, suggests a survey.
The largest ever survey of machine ethics, called the Moral Machine, laid out 13 possible situations in which someone¡¯s death was unavoidable. Respondents were asked to choose who to spare in situations that involved a mix of variables: young or old, rich or poor, more people or fewer. Within 18 months, the online quiz had recorded 40 million decisions made by people from 233 countries and territories.
When the researchers analysed these answers, they found that the nations could be divided into three groups. One contains North America and several European nations where Christianity has been the dominant(Õ¼Ö§ÅäµØÎ»µÄ) religion; another includes countries such as Japan, Indonesia and Pakistan, with strong Confucian or Islamic traditions. A third group consists of countries in Central and South America, such as Colombia and Brazil. The first group showed a stronger preference for sacrificing older lives to save younger ones than did the second group, for example.
The researchers also identified relationships between social and economic factors in a country. They found that people from relatively wealthy countries with strong institutions, such as Finland and Japan, more often chose to hit people who stepped into traffic illegally than did respondents in nations with weaker institutions, such as Nigeria or Pakistan.
People rarely face such moral dilemmas, and some cities question whether the possible situations posed in the online quiz are relevant to the ethical and practical questions surrounding driverless cars. But the researchers argue that the findings reveal cultural differences that governments and makers of self-driving cars must take into account if they want the vehicles to gain public acceptance.
At least Barbara Wege, who heads a group working on autonomous-vehicle ethics at Audi in Ingolstadt, Germany, says such studies are valuable. Wege argues that self-driving cars would cause fewer accidents, proportionally, than human drivers do each year ¡ª but that people might focus more on events involving robots.
Surveys such as the Moral Machine can help to begin public discussions about these unavoidable accidents that might develop trust. ¡°We need to come up with a social consensus,¡± she says, ¡°about which risks we are willing to take.¡±
24.Why is it difficult to set universal moral rules for programming self-driving cars? A.Social values always change with the times. B.Moral choices vary between different cultures. C.Drivers have a preference for sacrificing the weak. D.Car makers are faced with decisions of life or death.