Eudemon防火墙开启NAT的情况下，对系统性能影响大。
参考答案：错
___ is known to all, China will be an _____ and powerful country in 20 or 30 years’time.
A．That; advancing
B．This; advanced
C．As; advanced
D．It; advancing
常导致脘腹冷痛，吐泻清稀的邪气是（）
A.暑邪
B.寒邪
C.燥邪
D.湿邪
E.火邪
