低血钾型周期性瘫痪的临床表现，正确的是
A．多见于中老年患者B．颅神经受损C．对称性弛缓性瘫痪D．腱反射亢进E．病理反射阳性
参考答案：C
No conclusion _______ about whether to tear down the old buildings for a theme park until several discussions have been made．
A．will be reached
B．is reached
C．is being reached
D．had been reached
航天保险是指（）。
A.专为航天飞机提供风险保障的保险
B.为航天产品包括卫星、航天飞机和运载火箭等提供风险保障的保险
C.专为运载火箭提供风险保障的保险
D.为航天员提供风险保障的保险
