阅读理解。 The men dressed as police officers stole about $200 million worth of art from the Isabella Stewart Gardner Museum early this morning. The two burglars(窃贼)knocked on a side door of the museum at about 1:15 am. They told thetwo security guards who were on duty that there was a distce in the area. The guards then madethe very serious mistake of allowing the two men to go into the building. After they went in, the two burglars tied the guards up with tape. The two men spent about two hours in the museum. During that time, they stole 11 paintings andan ancient Chinese vase. The stolen works included three paintings by Rembrandt. A maintenance(保卫)worker discovered the two guards at about 7 am and called police. One of the greatest losses was Rembrandt's works, "The Storm on the Sea of Galilee." It was a very popular attraction at the museum and was one of the most valuable works stolen. Museum officials said that the value of the stolen art is at least 200 million dollars, and may in factbe much more. The true value of the paintings is unknown, because they have not been on the marketfor nearly a century. According to law enforcement officials, this is considered to be the biggest theftever in the United States. Officials are waiting to see whether the burglars will demand a ransom forthe paintings or try to sell them to a private collector. Museum officials and police are not sure why the burglars chose certain works and not others. There are other paintings in the museum that are even more valuable than the ones that were stolen. Special investigators are looking into the theft and the museum's security system. They believe thatthis is a "professional job", because the people involved were well prepared and knew what they wanted. Investigators have already questioned the museum's guards extensively. They would not givethe names or ages of the guards, but one investigator said the Gardner hires and trains its own securitystaff. So far, the guards have not been identified as suspects in the case. An investigator said that anybody having any information about the robbery should contact the Boston Police Department immediately. 1. We can infer from the passage that . A．the security guards didn't identify the false policemenB．the police had accurate ideas of the robbery after investigatingC．the burglars didn't dare to sell the stolen things on the marketD．the security guards helped the thieves secrectly 2. According to the passage, "The Storm on the Sea of Galilee" was the following except that . A．it was Rembrandt's works B．it was the most valuable work at the museumC．it was very attractive to visitors D．it was one of the greatest losses