According to the text,the theater
A. first appeared in England.
B. follows two classical rules.
C. were only sponsored by the nobility.
D. had various types.
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钢和铁都是铁碳合金，它们以含碳量()为界，含碳量小于这个量时为钢，大于这个值时为铁。
A. 0.25%.
B. 0.6%.
C. 0.8%.
D. 2.06%.
作为无形资产人账的商誉，既可以自创，也可以外购。()
A. 正确
B. 错误
What can be a suitable title for the text？
A. Kinds of Memories
B. The Length of Memories
C. New Findings on Memories
D. The Importance of Memories
我国目前设立的证券投资基金均为契约型基金。()
A. 正确
B. 错误
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