instruction:
You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.
question:
Paragraph- Sent 1: Rivers flowing over gentle slopes move more slowly.
Sent 2: They move much more slowly than a mountain stream.
Sent 3: These slow moving streams create different types of features than mountain streams.
Sent 4: Slow moving water erodes the sides of their channels more than the bottom.
Sent 5: Also, large curves in the stream form.
Sent 6: These curves are called meanders.
Sent 7: Meanders are caused by erosion and deposition.
Sent 8: Remember, faster moving water causes erosion more quickly.
Sent 9: Slower moving water erodes material more slowly.
Sent 10: If water is moving slowly enough, the sediment being carried may settle out.
Sent 11: This settling out, or dropping off, of sediment is deposition.
Sent 12: The curves are called meanders because they slowly wander over the land.
Sent 13: As meanders erode from side to side, they create a floodplain.
Sent 14: This is a broad, flat area on both sides of a river.
Sent 15: Eventually, a meander may become cut off from the rest of the river.
Sent 16: This forms an oxbow lake.
Question: Do mountain streams flow more slowly than rivers flowing over gentle slopes? (A) No. (Rivers flowing over gentle slopes move much more slowly than mountain streams.) (B) They flow more slowly (C) They flow at the same speed (D) No (E) Yes (F) They flow faster (G) They move slower (H) They move faster.
answer:
A, B, D, H.

question:
Paragraph- Sent 1: Moscow (CNN) -- Divers have completed their search of a Russian cruise ship that sank last weekend with the loss of many lives, the Emergency Situations Ministry told CNN Friday.
Sent 2: The official death toll has reached 114 -- including 66 women, 28 children and 20 men, the ministry said.
Sent 3: The bodies of 15 people are still missing.
Sent 4: There were 208 people on the "Bulgaria" at the time of the accident Sunday, of whom 79 were rescued.
Sent 5: Divers have checked all the boat's compartments, the ministry said, and are now looking for more bodies around the boat as well downstream on the Volga River, where they could have been carried by the current.
Sent 6: The area where search efforts continue has been enlarged to 200 kilometers (125 miles) from the scene, Russian Transport Minister Igor Levitin said at a briefing Friday.
Sent 7: Preparations are under way for the cruise ship to be raised from the river bottom in the coming days.
Sent 8: Two large boat cranes, one from Moscow and another one from Volgograd, which will be used for the lifting, are on the way to the accident site.
Sent 9: "We have asked the Emergency Situations Ministry to keep 23 divers at the scene to continue the search for bodies even during the lifting operation," Levitin said.
Sent 10: Specialist military divers were brought in mid-week to aid in the search efforts.
Sent 11: Four people face criminal charges over the sinking of the ship, which Russian media have called the most devastating river accident in the country's history.
Question: How many people can be accounted for after the search of the ship? (A) 193 (B) 66 (C) 79 can be accounted for (D) 20 (E) 114 dead and 79 survivors can be accounted for (F) 28.
answer:
A, E.

question:
Paragraph- Sent 1: New Legitimacy: Organized crime was soon to have a formidable adversary in its bid to control Las Vegascorporate cash.
Sent 2: Though Las Vegas had developed a powerful local economy, few major outside investments were made in the city, due primarily to mob infiltration and its inherent ties to illegal activities.
Sent 3: That would change dramatically with the 1966 arrival of billionaire Howard Hughes.
Sent 4: A legitimate businessman, Hughes was nonetheless eccentric and dramatic, a style suited to the Las Vegas ethos.
Sent 5: True to the myth, the reclusive Hughes immediately cloistered himself in the Desert Inn's penthouse.
Sent 6: Several weeks later he was askedthen orderedto vacate the room to make room for high rollers, whereupon he promptly bought the property and fired the management.
Sent 7: Thus began Hughes' legendary three-year, $300-million Las Vegas buying spree.
Sent 8: When it was over, Hughes owned six casinos, an airport, and an airline, along with numerous plots of land stretching from the Strip to the mountains.
Sent 9: Hughes' actions would have beneficial repercussions, both immediate and lasting.
Sent 10: Because of the new legitimacy Las Vegas acquired from Hughes' investments, established companies such as Hilton Hotels bought into the gaming business, and their influence helped draw a line in the desert sand between legitimate operations and mob casinos, where illegal skimming of profits was rampant.
Sent 11: That, combined with the formation of the Nevada Gaming Control Board, would signal the beginning of the end for heavy mob influence in the city.
Sent 12: Las Vegas with a Vision As corporations moved in and the mob was slowly pushed out, a new Las Vegas emerged.
Sent 13: The legitimization of gambling led to its increased legalization across the US.
Sent 14: What was once a sure thing became much more competitive.
Sent 15: Casino operators had to reassess the nature of their business.
Sent 16: The first to really do so was Steve Wynn, a Las Vegas resident and owner of the Golden Nugget.
Sent 17: In the mid-1980s, Wynn began plans to reinvigorate Las Vegas with a new resort.
Sent 18: He bought several Strip propertiesthe Silver Slipper and Castaways among themand demolished them to make way for a new kind of resortMirage which became an instant success.
Question: What did Hughes buy in his three year buying spree? (A) The Silver Slipper and Castaways (B) Six casinos, an airport, and an airline, along with numerous plots of land stretching from the Strip to the mountains (C) Mountain Chalet (D) Hughes owned six casinos, an airport, and an airline, along with numerous plots of land stretching from the Strip to the mountains (E) Desert Inn (F) Five Resorts (G) Six casinos, an airport, an airline, and numerous plots of land (H) Two Hotels.
answer:
B, D, E, G.