2．
Draw a giraffe in your mind．How did you draw your giraffe？Does it have a long neck？Does it have long legs？Is it really tall？When people think of giraffes，they think of their long necks． A long neck and four long legs make the giraffe the tallest land animal on earth． A giraffe is 1.8m tall when it is born，and some giraffes get up to 6m tall when they are all grown up．
But did you know that giraffes also have long tongues？Have you seen the tongue of a giraffe before？A giraffe has a very long tongue which can hold and wrap （包） around objects．The tongue is designed for feeding，but it can be used in many different ways．For example，a giraffe can close its nose with its long tongue completely to keep out sand and dust．Also，a giraffe's tongue is long enough to clean its owner's ears as well!
The tongue is black in colour to protect it from getting sunburnt （曬傷）．It is nearly 56cm long．Giraffe only eat plants，and a full grown giraffe can eat 33kg of leaves a day．When giraffes look for some tall trees to eat，they sometimes fight with elephants for food．Giraffes use their tongue to eat leaves from some tall trees．The giraffe's tongue is a helpful tool for reaching leaves and breaking off branches．
51．What is this article mainly about？Giraffes'long tongues．
52．What does a giraffe feed on？Leaves
53．What color is the tongue of a giraffe？Why？It's black．To protect it from getting sunburnt．
54．Give two examples of the use of the giraffe's tongue．Close its nose to keep out sand and dust．/Clean its ears
55．Translate the underlined sentence in the first paragraph into Chinese．一個長脖子和四條長腿使長頸鹿成為地球上最高的陸地動物．
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