23.開放性試題。 Hiking (遠足) is an activity of going out for a long walk for fun.People often go hiking in the mountains.It's so popular that there are a lot of hikers around the world.Some hikers enjoy nature.They like to see the trees,rocks and animals.Others love this activity because it helps people release pressure(減壓) and stay healthy.People enjoy hiking because hiking doesn't need much money.A good pair of hiking shoes and some comfortable clothes are enough.What's more,people can do the activity in any season and almost in any weather.Hiking is so good,let's go hiking this Sunday! (1)Where do people go hiking?