抗凝治疗常用的药物有肝素、低分子肝素及华法林等，治疗期间应监测凝血时间和凝血酶原时间。
参考答案：对
_________ a sports meeting in our school this Friday afternoon.
A．There is going to be
B．There will have
C．There are going to be
D．There is going to have
在Authorware中，只能限制用户交互的次数，无法限制交互的时间。
