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问题
选择题
His grandma _____ for two years.
A. died
B. has been dead
C. was dead
D. has died
答案
答案:
B
多项选择题
急性脊髓炎的病理特点是病变区出现()
A.神经细胞坏死脱失
B.白质脱髓鞘
C.胶质细胞严重增生
D.炎细胞浸润
E.局部萎缩
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判断题
我国早在20世纪50年代开始信息类法制建设。
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