题目内容

对输尿管的正确描述是

A. 起于肾门
B. 开口于膀胱体的两侧
C. 沿腰大肌后面下行
D. 可分为腹段和盆段两部分
E. 长约20~30厘米

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I did not get your letter until yesterday. （Rewrite the sentence, emphasizing the underlined part of a sentence with a cleft sentence（部分强调句）.）It was not until that I got your letter.

She has bought two tickets for the 7:30 show.（Rewrite the sentence, emphasizing the underlined part of a sentence with a cleft sentence（部分强调句）.）

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正常成人膀胱的容积约为

A. 100~200ml
B. 200~300ml
C. 300~500ml
D. 400~600ml
E. 600~800ml