水分在植物体内，进出的途径是（　　）

根据短文内容回答下列问题。

    Camping in your backyard is full of fun, whatever your age is. It's great for keeping us relaxed. It offers chances to check the night sky and to be noisier than usual. It lets us have friends over to stay who might not fit inside the house! Follow these instructions and you'll have a night you'll never forget!

    Put up your tent.

    Depending on the number of family members and guests, you may need more than one tent. Tell your friends to bring their tents if needed. Follow the instructions or check out the articles on how to put up a tent on the Internet.

    Prepare your bedding.

    You'll want your guests to be able to relax in comfort. Put something soft to lie on on the floor: A blow-up air mattress or thick comforters may work well. Fill the tent with soft toys and blankets(毯子). Have lightweight sleeping bags or cotton blankets. They are especially important if you live where the night temperatures drop greatly.

    Prepare a seating area.

    If you have a picnic table, that would work best. If not, set up a few chairs and a small table to set out drinks and food. A simple choice is to lay out a blanket in the sun, so that your friends can eat and talk. Be sure the grass isn't wet!

    Make memories.

    Plan some activities. You're camping in the backyard, so it's time to make the most of being outdoors.

    Have a camera nearby to take silly photos of you, your family members, and your friends. Take one large group shot with everyone smiling and laughing. Be sure to make copies for everyone!

读欧洲部分地区图，回答下面小题。