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—Hi, sir, may I __ seats with you? I want to sit next to my mother. —With pleasure.
12个月前
用所给词的适当形式填空 1. There are so many people in the street! It is really too ____ (crowd), isn't it?
1年前
医生用超声波粉碎人体内的结石,说明声波能够传递______;医生给病人做B超诊断病情,说明声波能够传递______.
1年前
一个底面积是6平方分米的长方体容器,容器里的水深17厘米,在容器里放入一个西瓜后(西瓜完全浸入水中),现在水深26厘米,这个西瓜的体积是多少立方厘米?
1年前
1年前