题目内容
含有活泼亚甲基化合物通常作为迈克尔供体参与“迈克尔（Michael）”加成反应。
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判断时态Analyze the following sentences to see what tenses they belong to.P表示一般过去时态，PP表示现在完成时态1) I've only been here for ten minutes or so.2) Ted has always worked in an accounting department.3) Mark has worked for this large company for many years.4) John graduated from Florida State University in 1990.5) We had the same weather in Detroit last year.6) He has never made a serious mistake at work.7) What has the weather been like recently?8) Robert went to school part-time while he worked full time.9) Robert has received two promotions so far.10) Robert has decided to look for a job in a larger company.
学者夏承焘在《唐宋词欣赏》中评价这首词”肝肠似火，色貌如花”，请问如何理解？
这首词下片，以汉武帝陈皇后遭到嫉妒，失去君王宠幸为比喻，表现了词人遭人陷害，怀才不遇的苦闷。以善妒的杨玉环和赵飞燕的悲惨结局，警告当权小人不要得意忘形之意，这属于什么修辞手法？
词的结尾，选取斜阳、烟柳等意象，用黯淡、迷离的景致，寄托作者壮志难酬、北伐无望的悲怆情感。
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