题目内容：

    Over the years, the small Vermilion Heritage Museum in Alberta, Canada, tried everything in its power to unlock an old safe (保险箱) in its basement: The museum hired blacksmiths, called the manufacturer, contacted former employees and challenged visitors to play around with the safe but nobody had any success.

Until last month, when a visitor to Vermilion cracked the code (密码) on his first try, much to the astonishment of everyone present.

Stephen Mills, from Fort McMurray, Alberta, was on a family camping trip with his wife and his two children. After giving the Mills' family a tour of the whole building, the museum volunteer showed them the objects in the basement, including the mysterious safe.

It originally had belonged to the town's Brunswick Hotel which opened in the early 1900s. When the hotel shut down in the late 1970s, the safe was locked: —and so it had remained.

“It was like a time capsule, nobody had any idea of what was in there,” said Mills.

Like other visitors, Mills was offered the chance to take a crack at opening it.

“Just like you see in the movies,” he said, “I looked at the dial and I saw the numbers were running from 0 to 60. So I thought in my head 20-40-60. I did a particular combination which is three on the right, two on the left, and one on the right, tried the handle … and it opened!””

“It was a 100% guess.” he said. “I was fully amazed. I stepped back a lttle bit and thought,

“I'm buying a lottery ticket tonight!””

The contents of the safe proved a little disappointing.

“Unfortunately, there wasn't what we thought was there,” Mills said. “Some papers, old checks, a waitress' notebook, and a receipt from the hotel. That's it.”

Nonetheless, Mills said everyone was excited about the lucky guess. “My children kept screaming “We beat the code! We beat the code!” he said.

1.Who unlocked the mysterious safe?

A.A visitor. B.A volunteer.

C.A blacksmith. D.An employee.

2.How did Mills unlock the old safe?

A.After several attempts. B.Through accurate calculations.

C.By a random guess. D.With professional guidance.

3.What did Mills think of the contents of the safe?

A.Exciting. B.Unexpected.

C.Impressive. D.Valuable.