Dolphins are known as marine (41) ______they breathe air, they are warm-blood, and they bear live young ones called (42) ______
The size of dolphin is very greatly. (43)______ smallest dolphins are just about 50 kg in weight and 1.2 meters in length (44) ______the largest one can weigh up to 8.200 kg and is 10 meters long.
Dolphins are sociable creatures. They swim together in group known as (45) ______They show great ability in the water. Dolphins are interested (46) ______humans and often rescue people in the sea (47) ______are in danger. They are intelligent creatures and make sounds to (48)_____ with each other. Scientists have studied dolphins (49) _____many years and are now looking into the possibility of dolphins that are able to carry (50) _____ tasks under the sea.
41. A. fish B. creatures C. mammals D. life
42. A. babies B. calves C. young D. diets
43. A. A B. An C. The D. And
44. A. when B. as C. while D. since
45. A. currents B. flocks C. herds D. teams
46. A. in B. at C. on D. of
47. A. which B. whose C. when D. who
48. A. talk B. communicate C. contact D. connect
49. A. in B. since C. for D. during
50. A. out B. in C. of D. wit
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Dolphins are known as marine (41) ______they breathe air, they are warm-blood, and they bear live young ones called (42) ______ The size of dolphin is
By Eva
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41. Life
42. Young
43. A
44. While
45. Flocks
46. At
47. When
48. Communicate
49. Since
50. In
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41. Mammals
42. Calves
43. The
44. While
45. Herds
46. In
47. Who
48. Communicate
49. For
50. Out