58．After reading the passage and the diagram，what is the most important cause of the rain?

    A．The sea      B．The clouds

    C．The mountain  D．The desert

57．Which part in the diagram is good for farming?

    A．A to B    B．C to D

    C．E to F     D．F to G

56．Suppose it is in the northern part of the earth，which season is dry?

    A．Spring    B．Summer    C．Autumn   D．Winter

In January，February and March，warm wet winds blow strongly across the sea towards the mountain．The winds pick up moisture（湿气）as they blow across the sea．When clouds reach the mountain，they rise and become cooler．The higher they have to go，the cooler they become．The moisture in the clouds turns to rain．As a result，the clouds drop rain on the west side of the mountain，which sometime has problems with flooding．Some of the clouds pass over the mountain but there is little rain in them．

    In July and August，winds blow from G towards the mountain．They pass over a wide desert，where it is always very hot．The winds become hot and dry．They rise when they meet the mountain．They do not form clouds because there is no moisture in the hot air．

    The diagram shows why（in many counties）there are profitable（有益的）farms on the side of a range of mountains but there is a desert on the other side．

根据短文内容，选择正确答案。

55．If you do get lost，you’d better walk back to your campsite quickly．

B

Look at the diagram（图表）below．It shows a cross―section（横截面）of a mountain and the land on each side of it．The sea is on the west side of the mountain．

54．If you are lost at night，build four campfires close together．

53．If you do get lost，you shouldn’t panic before you go back to your campsite．

52．Before you leave your camp，find a large landmark nearby to mark your campsite．

51．You’d better take a notebook，a pencil and a compass before you go for a camp．

    Even experienced campers sometimes may get lost．To avoid getting lost stay on Marked trails．Take a notebook and pencil with you for notes．Use a compass so you know what direction you are going．To find your way with a compass，you must know which way you want to go．Before you leave your camp，find a large landmark nearby to mark your campsite（露营地）head in the opposite direction from the landmark，if your compass shows you are going west，which direction will you travel to return to you campsite? East．

    If you do get lost，don’t panic．This is the worst thing you can do．People who panic have been known to walk in big circles．They don’t realize this，of course．They exhaust themselves and never get back on course．

    If it is late，and others know you are out hiking，stay where you are．Someone will come looking for you soon．

    If it is early，and you want to try to find your way back，leave trail marks to show you where you have been．Tie a handkerchief to a branch．Put a pile of stone on the trail you have taken．If you have pen and notebook in your pack，write a note and put it on a tree．Write down the time，date，the fact that you are lost and the direction you are now hiking．

    If you are lost at night，build two campfires close together．Two columns of smoke side by side are a signal for help．Rangers and campers will recognize and respond to the fires．They will locate your smoke signals and come to find you．

根据短文内容，判断正误。正确的用“A”表示，错误的用“B”表示。