請(qǐng)閱讀下面一篇關(guān)于美國(guó)學(xué)生暑假活動(dòng)的短文，根據(jù)所提供的信息，回答下面的問(wèn)題。
   American schools have a long summer vacation（暑假） from the beginning of June to the end of August.That means young children can spend more time at home relaxing.Many spend time outdoors，playing sports or just enjoying nature（大自然）.Many also love to go out with friends and read books.It is also a great time for families to travel to visit relatives（親戚） or see interesting places for a few days or weeks.Families sometimes go to big cities to see well-known buildings or places，but most often，families like to find quiet places such as beaches or mountain areas.It is also fun to go to a camp.During the summer vacation there are many camps for school children，such as horseriding camps，computer camps，science camps and band camps.Most children enjoy taking part in different camps every summer.They can make new friends and have a lot of fun.
   There are some kids spending time during the summer vacation doing volunteer（志愿者）work—work for free.Kids can clean schools，sing for hospital patients or read to children.Parents like to encourage（鼓勵(lì)）volunteer work，it is a good way for children to practice showing kindness.

（1）When do American schools have summer vacation？

From the beginning of June to the end of August.

From the beginning of June to the end of August.

（2）What activities do many children do outdoors？

They play sports or enjoy nature.

They play sports or enjoy nature.

（3）Where do families go to see well-known buildings？

Families go to big cities to see well-known buildings.

Families go to big cities to see well-known buildings.

（4）How many kinds of camps are mentioned（被提及）？

Four.

Four.

（5）Why do people like to encourage volunteer work？

Because it is a good way to practice showing kindness.

Because it is a good way to practice showing kindness.