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Read the passage carefully. Then choose the correct answer.
 

Crocodiles are the world's largest reptiles. Some species of other animals have become extinct but the crocodiles have not experienced such a fate. All 23 species of the crocodiles are still surviving. There are two types of crocodiles found in Australia, freshwater and estuarine. Their long jaws, protective armor, streamlined bodies and long tails make them very suitable for living in aquatic surroundings like swamps and rivers.

Crocodiles are cold-blooded. Their body temperature changes according to the temperature of the air, water and land of its surrounding. Freshwater crocodiles can be found at the rivers and swamps in some parts of Australia. They have  narrow snout and reasonably straight jawline with even-sized teeth. Unlike the estuarine crocodiles, they are not 'man-eaters' and feed mainly on insects, frogs, lizards, turtles, with bats, birds and small mammals.

The estuarine crocodiles, on the other hand, are found mainly in the warm climate of Sri Lanka, India, Myanmar as well as other some countries in Southeast Asia and Australia. They have broader snouts than freshwater crocodiles, with an uneven 'up and down' jawline and irregular-sized teeth. It is estimated that they can live for at least 70 to 100 years.

     
  1.

The crocodiles are different from all other animals because ______.

       
    (A) none of their species have become extinct
    (B) some of their species have become extinct
    (C) they have snouts
    (D) they live in rivers and swamps
       
  2. There are ______ types of crocodiles in Australia.
       
    (A) 2
    (B) 3
    (C) 17
    (D) 23
       
  3.

Why are crocodiles suitable for aquatic surroundings ?

       
    (A) They have even jaws.
    (B) They have long jaws and streamlined bodies
    (C) They have large snouts
    (D) They have uneven jaws.
       
  4. Cold-blooded means ______.
       
    (A) the animal's blood is cold
    (B) the surrounding area is cold
    (C) the body temperature changes according to the surroundings
    (D) the body temperature becomes cold
       
  5. Freshwater crocodiles differ from estuarine crocodiles in ______.
       
    (A) their appearance
    (B) their diet
    (C) their appearance and living conditions
    (D) their appearance and diet
       
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  Answers : 1A   2D   3B   4C   5D
 
 
 
 

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