问答题

是世界上第一个建立医疗保险制度的国家。

答案： \n \n \n \n (1)\n ...

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单项选择题

措施可增加土壤表层湿度。

A．松土
B．镇压
C．垄作
D．培土

单项选择题

In the blues, what is a blue note?

A．.The note that the song ends on.
B．.A note that sounds particularly sad.
C．.A note that sounds particularly happy.
D．.The notes that are played on the guitar.