跑步的行进速度是多少？
参考答案：
跑步的行进速度为每分钟170-180步。
In the foreign trade business, the trade terms CFR is often used. CFR is the abbreviation for ______.
A．Commercial Invoice
B．Cost, insurance and freight
C．Cost and freight
D．Carriage paid to
癫痫持续状态常可伴发（）
A.高热
B.外周血白细胞增高
C.酸中毒
D.脱水
E.高血糖
