【简答题】What did Mr. Stewart find in his studying the phenomenon of 'anchoring'?
【简答题】What did Mr. Stewart learn from the letter?
【判断题】变质作用的方式主要包括重结晶作用、变形与碎裂作用 、变质分异作用 、 交代作用 及变质结晶作用和变质反应 等。
【简答题】What did Mr. Trigg complain about in his original letter? Mr. Trigg complained about his ______.
【判断题】氧气瓶外表涂成天蓝色,并用黑漆标注“氧”字样。( )