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Câu trả lời:

In our life, what also has two sides of it is: the good and the bad. Facebook social network too. One of the other utilities can not deny is the sharing of facebook: information, images, news,… with speed in seconds. Social networks are easy to use and it offers many benefits to users. It will create conditions conducive to the learning kidney as well as the communication hub in the work of the user. Especially young people, it will bring you a lot of opportunities to develop the ability to search for business learning, earn money to be able to achieve the dream. However, Facebook will affect very bad for those who use it on purpose or not, or the unhealthy purpose. It also can be addictive for those who do not know control myself, when they won too much time using this application. Therefore, beneficial or harmful facebook depending on intended use of each person.

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Nowadays, increasing many people use facebook , a popular social networking. Facebook brings in many great advantages to the youths, the adults as well as the business men. First of all, Facebook is a website which allows us to communicate easily. It provides several features such as chatting, personal messaging and photo sharing, which enables us to share information with other facebookers conveniently. We can send pictures, videos and even some sweet greetings for someone we like. Besides, we can re-connect with old friends or someone who we have lost touch with for a long time. With the search function of facebook, we can rapidly search for by entering the key words such as his/her name or address. That's change a lot. In addition,people can use facebook as an efficient place to advertise their products. We can only sit in the front of the computer, upload the advertisement and then enter share putton .In a few minutes,this advertisement will spread worldwide like wildfire. Thus we can save money instead of advertising it on the mass media. To sum up, facebook is a popular and useful website for everyone to communicate,re-connect with old or lost friends and promote the businesses.

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Câu trả lời:

Confronted with the prospect of continued waves of COVID-19 infections, at least until an effective vaccine is readily available, countries around the world are constantly optimizing their policy response to the pandemic. Initially undertaking full-fledged national lockdowns, governments are increasingly seeking more selective and localized public health interventions. Notable amongst these countries are Australia (Melbourne), Spain (Cataluña), and China (Beijing) with their recent focus on highly targeted interventions. Can such an approach be effective in controlling the pandemic? Can it help minimize the economic costs for businesses and people?

For policymakers, answering these questions in near-real time is difficult due to the delay in gathering economic, social, and financial information through conventional means. Large technology companies have made available human mobility data that makes it possible to monitor the impact of the COVID-19 interventions in near real-time worldwide. In this blog, we will illustrate the use of this data to measure impact here in Vietnam, which was recently hit by a second wave of COVID-19 infections.

On July 24, after 99 days of zero community-transmitted COVID-19 infections, a 57 year-old man tested positive in Danang, a major city in central Vietnam with close to 1.5 million inhabitants. Within three weeks, almost 600 people were infected, over 25 deaths recorded. Most of these cases remained concentrated in and around Danang. Authorities were quick to respond to the outbreak: the city was swiftly shut down with an estimated 80,000 tourists evacuated, most hotels and businesses closed, and nearly all domestic and international flights cancelled. Importantly, this approach differed from the policy in April, when a state of emergency was adopted nationwide for three weeks. This time in Danang, Vietnamese authorities opted to implement a strict but localized lockdown instead.