18.In Florida in the US,primary school students have no homework now.The only thing they have to do is to read for 20 minutes each night. This is called the "no homework" policy (政策).Around the US,many primary schools are trying out this policy.But there is some debate (爭論) about it.Some people think this policy is good.With no homework,kids can have more time to play sports and be with their families.But others believe homework helps students remember what they have learned in class.It can also help kids make good daily habits. In fact,the debate lasts(持續) for more than 100 years in the US.In the 1900s,many schools required no homework.But these days,parents ask for more homework,because competition from kids around the world is becoming greater.And now,people still question whether homework should be part of kids' lives or not. This is part of a long history of debate over homework and it may continue for years.
(1)According to the passage,what do primary school students in Florida have to do each night?
(2)What is the advantage (優點) of homework? (One example is OK.)
(3)How long does the debate last in the US?
(4)Why do parents ask for more homework these days?