问题类 question marks ; Problems ; what-why-how-implication
主题类化法 Thematic Apperception
问题类别请说出年代 name the decade ; appoint the ten-year ; name the ten-year ; label the decade
标题类型 topic Types
主题类型 Topic types ; TopicType
问题类市场 question mark
问题类别 Problem Category
社会问题类 Social Problems
问题类别带刺的 Hedgehog-podge
主题类别 Subject directories
解析：根据题干中的some of them are specialist theatres，考生可锁定文章的第六段。 作者随后举了例子来说明什么是specialist theatres，这些剧院只上演某一类戏剧。
What does the author mean by saying "some of them are specialist theatres"?
那道物理题跟我已知的一类题型相同。
That physics problem fit the pattern of a class of problems I already knew how to solve.
比如，你的是网站设计类的博客，那你就可以写一篇文章题如“设计师所需的百项免费资源”。
If you have a web design blog, for example, you could write an article with "100 Free Resources for Designers". Here are some ideas for killer articles.
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