2岁女孩,突然出现阵发性哭闹、腹痛伴呕吐,应考虑的疾病有()
A.急性阑尾炎
B.巨结肠伴肠炎
C.肠系膜淋巴结炎
D.上呼吸道感染
E.急性肠套叠
参考答案:A, C, E
_____ different life today is ____ what it was 20 years ago. [ ]
A. How; from
B. What a; from
C. What; from
D. How; than
债权人的代理请求债务人偿还拖欠的债务,这将引起诉讼时效的( )。
A.中断
B.中止
C.延长
D.消灭