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问题
单项选择题
血虚引起气虚病变的理论根据是( )
A．气能生血
B．气能行血
C．气为血帅
D．血能养气
答案
参考答案：D
选择题
—I haven't seen your sister for a long time.
—She _______ Beijing on business for a month.
A. went to
B. has gone to
C. has been to
D. has been in
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填空题
印泥、纯蓝墨水、墨汁、蓝黑墨水、铁盐复印图、静电复印件字迹中，以（）字迹为最不耐久
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