吊装作业时（）等恶劣天气不得进行吊装作业。
A、六级风力
B、大雨
C、大雾
D、大雪
参考答案：A, C, D
The bad news of 5.12 Wenchuan Earthquake made us all ______. Everyone in our school was sad and
prayed for (为…祈祷) those hurt and died in the terrible nightmare. (噩梦) [ ]
A. exciting
B. unhappy
C. terrible
D. surprise
皮脂腺囊肿属于
A．牙源性颌骨囊肿B．发育性囊肿C．阻塞性囊肿D．牙源性肿瘤E．孤立性囊肿
