Dolphine are know asa (7)______they bear the callat calver They nice ở dolphin í vết greatly (8)_____mallest dolphins are just about 50kg in weighty and 12 ancters in length while the latest one can weigh up to 8.200kg and í 10 metres long dolphins sẽ soelable creatures . They btogther in group know as bents .they sho...... They are intelligent and make sounds to (10)_____ with each other sclentisa have studied dolphin for many years and are now looking in to thế possibility of dolphins thật sẽ able to cazy (11)_____ tacks uoder thể sea 7: A: tife B:creatities C:mammals D: fish 8 A: the B:a. C:an B D:and 9: A: swam B:swim. C: swimming D: swim 10 : A: connecting B: connectins C:connected D:connect 11: A: of B: in. C: out. D: with