A、If they are in high school. B、If they are mentally mature. C、If they are married. D、If they are employed. D讲座最后提到，塞尔维亚允许已有工作的1

Good afternoon, everyone. Today, we are going to discuss voting. In Ohio’s presidential primary recently, 17-year-olds were permitted to vote. That’s unusual because the voting age in the United States is 18.But during this election campaign, some people want to change the voting rules.
    Several groups want local governments to permit all 16- and 17-year-olds to vote. Generation Citizen argues that lowering the voting age will increase interest in government and politics. Arguments against lowering the voting age include; 16- and 17-year-olds are not mature enough and would vote the way their parents do. Here is what one person wrote on the website debate, org: "It’s simply the fact that people at 16 -17 years old don’t have the emotional or mental maturity of someone 20-year-old. Their minds are still full of the chemicals of being a teenager. "
    Professor Daniel Hart of Rutgers University has studied the arguments on both sides of the voting-age issue. He found knowledge of 16- or 17-year-olds about government is about the same as that of 18- and 19-year-olds. There is a drop in 15-year-olds, he said. A University of Edinburgh study found 40% of 16- and 17-year-olds do not vote like their parents in Scotland’s 2014 independence referendum.
One reason for a lower voting age is that 18 is the worst age for people to begin voting, according to Scott Warren, executive director of Generation Citizen. "That is because at age 18 many teens leave home for the first time, either for college or a job. They find themselves in a community they do not know very well. And that makes it harder for them to learn about their new community’s voting rules and issues," Warren said.
    Some countries already permit teens younger than 18 to vote. Some examples from a recent survey by the US Central Intelligence Agency: Austria lowered the voting age from 18 to 16 in 2008.Argentina has allowed 16-year-olds to vote since 2012.In Brazil, 16-and 17-year-olds and those older than 70 have the option to vote; people aged 18 -69 are required to vote. Hungary allows 16- and 17-year-olds to vote if they are married. Serbia allows 16-year-olds to vote if they are employed.
    Now, what is your opinion? Do you believe that teens younger than 18 are okay to vote? Please email me if you have any ideas. Thanks!
    Questions 19 to 22 are based on the recording you have just heard.
    19.What is the legal age to vote in the United States?
    20. What does Professor Daniel Hart say about the 16- and 17-year-olds?
    21.Why is 18 the worst age to begin voting according to Scott Warren?
    22.On what condition can 16-year-olds vote in Serbia?