Exam tips

1. to help tackle the nation’s chronic smog/pollution problem 2. experimental
1. because many students took part, which means there is interest in science and technology 2. C 3. The winning invention was a cheap, recyclable gel that can absorb oil, for example from oil spills. 
1. Spoiled generations of children who are indulged by their parents and grandparents and born into privilege and political correctness. 
1. professional athletes/sports stars 2. (i) catchphrase (ii) mantra 3. China has set a goal of being an AI leader by 2030 but is suffering from an acute shortage of experienced AI talent.
1. vacuum flasks 2. They were often used as props in films.
1. (i) Children in Hong Kong are spending more time in front of screens than their peers in mainland China and the US
1. (Hong Kong has been) a shock to the system 2. wiping me out 3. They are convenient, fast and cheap. 4. C
1. the iPhone 2. The opinion that a phone with basic functions such as a good camera, and enough storage for your music and movies is “good enough”, and you don’t always need the “best” brand or technology. 3. C