Have you ever heard about the story of The old Man and the Sea？It was written by an American writer Hemingway，in 1952.The story is about an old fisherman（漁民） who has been fighting for a long time with a huge marlin（槍魚）.
    The old man went fishing every day，but he didn't catch a fish for eighty-four days.In the first forty days，there was a boy with him.The old man taught the boy to fish.But after forty days without a fish，the boy's parents told him that the old man was unlucky.The boy then was asked to work on another boat.
    After the boy left，the old man went fishing aljye.ai.One day the old man caught a huge marlin.Unluckily，the marlin's blood attracted（吸引）a lot of sharks.The old man was weak but fought against them hard.Finally，he went back with a huge fish skeleton（骨架）.Although the old man didn't bring back the fish，he won.
    The story tells us that when we are in the face of difficulties，we should fight bravely.

請(qǐng)根據(jù)以上短文內(nèi)容，按要求完成下列各題。
（1）Who wrote the book The Old Man and The Sea？

Hemingway.

Hemingway.

（2）How many days didn't the old man catch a fish？

For eighty-four days.

For eighty-four days.

（3）What did the boy's parents think of the old man？

They thought the old man was unlucky.

They thought the old man was unlucky.

（4）In the passage，the underlined word " them " refers（指） .

The sharks.

The sharks.

（5）The topic sentence（主題句） in this passage is "

The story tells us that when we are in the face of difficulties，we should fight bravely.

The story tells us that when we are in the face of difficulties，we should fight bravely.

".