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【简答题】
碳素工具钢随着碳的质量分数的提高,其力学性能有何变化?
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】传说中我国最早的学校叫做“()”，它出现在原始社会后期的虞舜时期。
【单选题】His family __________ all very well. His family __________ a 'five good' one. [ ]
A.
are; is
B.
is; is
C.
are; are
D.
is; are
【简答题】中国最早的学校叫做__________
【判断题】The first man immediately accepts the mermaid ’ s request because he knows that the mermaid can grant him a wish.
A.
正确
B.
错误
【单选题】His family members gave some examples of_____ his drinking and smoking had affected the family.
A.
that
B.
why
C.
how
D.
what
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