题目内容：

    In five minutes Buck had made fourteen hundred dollars for Thornton and his friends. The money made it possible for them to travel east, where they wanted to look for a lost gold mine. Men said that this mine had more gold than any other mine in the north. Many had looked for it, and some had died looking for it. The only men who knew where it was were now dead.

Thornton, Pete and Hans, with Buck and six other dogs, started off to the east in the spring. They travelled up the Stewart River and crossed the Mackenzie Mountains. They did not move quickly；The weather was good, and the men shot animals for food when they needed it. Sometimes they travelled for a week, and sometimes they stopped for a week and searched for gold in the ground. Sometimes they were hungry, and sometimes they had lots of food. They spent all the summer in the mountains, carrying everything they needed on their backs, sometimes making boats to go down rivers or across lakes.

In the autumn they came to a strange, flat country, with many lakes. They travelled on through the winter and met nobody, but once they found an old wooden house, with an old gun in it.

When the spring came, they found, not the lost mine, but a lake in a wide valley. Through the shallow water the gold showed like yellow butter, and here their search ended. There was gold worth thousands of dollars in the lake, and they worked every day, filling bag after bag with gold.

The dogs had nothing to do except watch the men and eat the food which the men shot for them. Buck spent many evenings sitting by the fire.

As he sat, he saw again his dream world, where the strange hairy man sat next to him. He also heard something calling him into the forest. Sometimes, in the middle of the day, he lifted his head and listened, and then ran off into the forest.

One night he woke up and heard the call again, a long howl. He ran into the forest, following the sound, and came to an open place in the trees. And there, his nose pointing to the sky, sat a wolf.

The wolf stopped howling and Buck walked slowly towards him. The wolf ran, and Buck followed. After a time, the wolf stopped and waited, watching Buck, ready to attack. But Buck did not want to fight, and soon the wolf realized this, and the two animals became friendly. Then the wolf started to run again, and he clearly wanted Buck to follow him. They ran for hours through the forest, and Buck remembered again his dream world where he, and others like him, had run through a much older forest.

Then they stopped to drink, and Buck remembered John Thornton. He turned and started to run back. The wolf followed him, then stopped and howled, but Buck ran on and did not turn.

Thornton was eating dinner when Buck returned. Buck jumped all over him, and for two days never left his side. He followed him everywhere, watching him while he ate and while he slept. But after two days the call of the wild came again, and he remembered the forest and the wolf who had run beside him.

He started to sleep out in the forest at night, sometimes staying out for three or four days. Once he was away for a week, fishing and killing animals for food. He ate well, and he grew stronger and quicker and more alive. His golden brown coat shone with health as he ran through the forest, learning its every secret, every smell, and every sound.

“He's the finest dog that I've ever seen,” said Thornton to his friends one day as they watched Buck walking out of camp. “There’11 never be another dog like him,” said Pete.

They saw him walking out of camp but they didn't see the change that happened when he was inside the forest. At once he became a thing of the wild, stepping softly and silently, a passing shadow among the trees.

1.How long did it take them to find gold?

A.About a year. B.About two years.

C.About six months. D.About three months.

2.What is the best title of this chapter?

A.The call of the wild.

B.The wolf in the forest.

C.The dog’s dream world

D.The lost gold mine.

3.This excerpt is a part of______?

A.a documentary novel.

B.a biography.

C.a fiction.

D.a news report.

4.In this excerpt(节选)we can clearly see that the author is good at______?

A.describing mental activities.

B.visualizing vivid scenes.

C.doing psychological analysis.

D.expressing personal belief.

5.What can we infer from the last four paragraphs?

A.Thornton and Pete noticed the change in Buck.

B.Thornton and Pete thought Buck was the best dog.

C.Buck became more and more obedient.

D.The wild life made Buck become stronger.

6.Which of the following about Buck is right?

A.Buck's hidden wildness was slowly awakened.

B.Buck liked to fight with the wolf in the forest.

C.Thornton and Pete didn't treat Buck well at all.

D.Buck didn't make any money for Thornton and his friends.