专家调查的优点是专家能最大限度发挥个人的主动性的创造性，是一种最科学的调查方法。
参考答案：错
I will have John ______ my bike and I heard Tom had had his bike _____ in that factory. [ ]
A. repair; repairing
B. repair; repaired
C. repaired; repair
D. repairing; repaired
急性腹膜炎的腹痛主要特点（）。
A.阵发性腹部剧痛
B.持续性腹部剧痛
C.转移性腹痛
D.腹痛向腰背部放射
E.解痉挛药能使腹痛缓解
