_________（49）A.disappearing into the water below.

_________（49）

A.disappearing into the water below.

B.Why is it,then,that most people survive attacks by great whites?

C.they most often move in slowly and bite less hard.

D.There is reason to doubt that great whites see well enough to attack humans.

E.It has been thought that they mistake people for the seals or sea lions which make up a large part of their diet.

F.He looked down and was terrified to see a great white shark biting the front of his board.

参考答案

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