投资者只要开立了证券账户后就可以进行证券的买卖交易。 ( )
参考答案:错
(118~120题共用题干) 女性,45岁,诊断为原发性甲亢,曾用抗甲状腺药物治疗后复发,现拟行甲状腺次全切除术。
该病人手术后最危急的并发症是
A.呼吸困难和窒息
B.双侧喉上神经损伤
C.一侧喉返神经损伤
D.甲状腺危象
Many of the students in my class go to school _______. [ ]
A. by buses
B. ride bikes
C. on their bikes
D. take trains