题目内容：

A 525-year-old copy of a letter by Christopher Columbus, stolen from the Vatican, was returned this week. An investigation by the United States Department of Homeland Security and the Vatican located the letter.

“We are returning it to its rightful owner, ” said U.S. ambassador to the Vatican, Callista Gingrich, at a ceremony in the Vatican Library. Columbus wrote the letter to the king and queen of Spain after discovering “The New World.” He described what he had found and requested money for another trip. His original letter was written in Spanish. But several copies of a Latin translation were made to spread news of his discovery to the royal courts of Europe and the Pope.

One of the Latin letters, copied by Stephan Plannack in 1493, was put in the Vatican Library. Known as the Columbus Letter, it has eight pages, each about 18.5 cm by 12 cm. In 2011, an American expert in rare manuscripts received a similar looking letter. After reviewing it, he decided that it was real. The year before, the same expert had studied a Columbus Letter in the Vatican Library and suspected that it was a fake. One reason was that the stitching (针脚) marks on the letter were not the same as those on the cover. The letter in the United States, however, had the exact same stitching marks as the leather cover of the fake letter he had studied in the Vatican.

The expert, who was not identified, contacted Homeland Security art investigators, who began working with Vatican inspectors and rare book experts. They believed that someone took the real letter out of its cover at the Vatican Library and replaced it with an artificial one. Archbishop Jean-Louis Brugues is the Vatican’s chief librarian. He said, “We do not know exactly when the substitution took place. We will probably never know who the forger (伪造者) was.”

Their investigations found that Marino Massimo De Caro, a well-known Italian book thief, had sold the real letter to a New York book dealer. De Caro is serving a seven-year prison sentence in Italy for stealing about 4,000 ancient books and manuscripts from Italian libraries and private collections. The late collector David Parsons bought the letter for $875,000 in 2004. After the investigations, his widow agreed to return the letter to the Vatican Library. Officials said the letter is now worth about $1.2 million.

1.What does the underlined word “artificial” in paragraph 4 mean?

A. criminal.    B. real.    C. false.    D. valuable.

2.Which of the following is true according to the text?

A. We know when the theft took place.

B. Christopher Columbus discovered “The New World” about 500 years ago.

C. Columbus’s letter was first written in Latin.

D. A Vatican inspector suspected that Columbus Letter in the Vatican Library was a fake.

3.Now you can see the once stolen letter in ________.

A. Callista Gingrich’s

B. Jean-Louis Brugues’

C. David Parsons’s

D. the Vatican Library

4.What can we infer from the text?

A. Columbus wrote the letter both in Spanish and Latin.

B. One of the Latin letters was copied by Stephan Plannack.

C. The letter in the United States is not a fake letter.

D. David Parsons returned the letter to the Vatican Library.