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问题
单项选择题
下列哪种检查不适宜于肾损伤
A．B超
B．CT
C．排泄性尿路造影
D．逆行肾盂造影
E．肾动脉造影
答案
参考答案：D
阅读理解
A. We enjoy his English stories very much.
B. I offer her a lot of English songs.
C. It is really helpful and her listening has been improved.
D. We also learn a lot from his stories.
E. Learning English is not hard for him.
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填空题
芡扮的特征为（）
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