8米的 $\frac{1}{9}$ （   ）9米的 $\frac{1}{8}$。

下图中虚线是某岛屿火山喷发后火山灰厚度等值线图（考虑风向作用），a﹤b﹤c。下列关于该岛的叙述，正确的是（    ）

①终年温和多雨     ②适宜生产柑橘、油橄榄  ③植被具有耐旱特征       ④雨热同期

秦统一后，作为全国规范的文字是（    ）

    Move over millennials(千禧一代), here comes Generation Z, today's youngest group.

    Born in 1995 or later, a lot of Gen Z-ers are entering into adulthood and will soon join the workforce. People of Generation Z have grown up with the internet. Policy makers, sociologists, as well as employers and marketers, are trying their best to understand these young people. So, how should we pin down the Gen Z-ers?

    Most people will agree that the single biggest difference between Gen Z and other generations is how connected they are. This is a group of people who were hooked up to social media as soon as they were born. A recent Guardian article says that the average teenager in the UK has at least 150 followers on Instagram and spends around half an hour a day on Snapchat, an image messaging app. “We are the first true digital natives,” Hannah Payne, an 18-year-old UCLA student and lifestyle blogger. “I can almost create a document, edit it, post a photo on Instagram and talk on the phone at the same time, all from the user-friendly interface(界面) of my iPhone.

    The Guardian also notes that young people in the UK are becoming more active in politics. Voting is just one way of making one's voice heard. Most of Generation Z are still too young to vote, says the Guardian. Instead of party politics, they focus more on single-topic issues such as feminism(男女平等)or climate change. And “much of the civil engagement and organizing they do takes place on social media rather than through traditional political structures,” according to the newspaper.