He arrived at the office at nine o’clock in the morning and went __________(straight)to the advertising section.
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We had to get through the narrow opening _______(sideways).
He made his way to the _______(exit) in a cloud of security men.
It seems hard to believe that such things went on among _______(senior) directors..
下列关于肾的位置说法正确的是（）
A. 左肾较右肾低
B. 第12肋越过左肾后面的上部
C. 右肾上端平对第12胸椎体上缘
D. 左肾下端平对第3腰椎体上缘
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