题目

Throughout our daily lives, we have known plenty of people and will know more. But how can we tell if someone is trustworthy? In a paper published recently in the Journal of Personality and Social Psychology, researcher gave us the answer.The researchers asked 401 adults from the United States to fill out a questionnaire measuring their guilt-proneness(内疚倾向) in different situations as well as several other qualities, and then play a short online game. In this game, Player 1 is given $1, which they can choose to give to Player2. Any money given to Player 2 is then automatically increase下列说法正确的是A．电解氯化镁饱和溶液，可制得金属镁B．煤可经分馏获得洁净的燃料C．非金属材料中不可以含有金属元素D．用丁达尔效应可以区分胶体和溶液