如果一个任务的最乐观估算为12天,最悲观估算为18天,那么最可能估算为多少()
A、15天
B、13天
C、16天
D、以上都不是
参考答案:D
急性阑尾炎的诊断要点包括()
A.急性腹痛,由上腹或脐周转移至右下腹痛
B.食欲不振及恶心、呕吐
C.低热
D.血常规白细胞增高,核左移
E.右下腹局限性固定压痛,肌紧张
根据句意和所给首字母填写单词。
小题1:Jane can play the piano, but she can't play it well. She n to practice more.
小题2:I really like sports. I want to join a sports c
小题3:Bob was very s two year's ago. Now he is tall, and he's the tallest in his class.
小题4:Yesterday evening, Mary t a walk with her mother after dinner.
小题5:My sister studies h , and she usually gets good grades in exams.