Q: Archimedes was a great scientist. He was also a great inventor of machines. He once said that if he could stand somewhere, he could move the earth with his machine. Hearing that, king of Sicily called Archimedes and his fellow scientist Ptolemy to come up with great inventions. Archimedes, as everyone expected, came up with a great machine. But Ptolemy couldn't do much in such a limited time. So, his device was not a machine. Would Archimedes' device more likely or less likely make work easier than Ptolemy's one?
A: more likely

Q: Two groups of children studied about some of the planets from our Solar system and their atmospheres. Group E studied about Earth, while group V studied about the planet Venus. Which group studied more about clouds made of water vapor?
A: Group E

Q: Justin and Robert are brothers who recently went to the doctor for their yearly physical. They wanted to know if they had any future health risks. The doctor asked them about their health habits. Justin told the doctor that he has smoked regularly for a long time, while Robert mentioned that he has never smoked. Who has a lower risk of getting lung cancer?
A: Robert

Q: Rob likes to visit high mountainous locations. Last year he visited the the Alps mountains in Austria. There he saw an unique type of glacier called valley glacier. This year he went further east to visit the Ural mountains in Russia. There he didn't see any valley glacier. If Rob is not interested in seeing joint blocks trapped in the glacier next year, which mountain should he visit, Alps or ural?
A:
Ural