用attend,join,take part in填空

1. The students are busy making preparations for the lecture because they will    the competition.

2. The old lady had a good doctor          to her.

3. He is proud of his        the Party.

4.I hope every one of you will         the discussion and find a better answer.

下列哪项不是DIC的诊断标准（）

A.3P试验阳性

B.血磷升高

C.纤维蛋白原降低（少于1.5g/L）

D.凝血酶原时间延长

E.血小板减少（少于100×10⁹/L）