如在现场遇有易、可燃气体发生爆炸的可能，灭火时首要任务是（）。
A.冷却降温
B.防止火势扩大
C.防止爆炸
D.防止中毒
参考答案：C
He was so pleased with all _____ we had done for him _____ he wrote us a letter to praise us for it.
A．that; that
B．what; that
C．that; what
D．what; what
向个人消费者提供互联网药品交易服务的企业，应当具备的条件不包括（）
A.依法开办的药品零售连锁企业
B.获得国家药品监管部门的批准
C.具备与上网交易品种相适应的药品配送系统
D.具有负责网上实时咨询的执业药师
