毒蛇咬伤最有效的局部早期处理是
A．胰蛋白酶局部注射或套封
B．拔除毒牙
C．伤口近心端肢体结扎
D．局部伤口烧灼
E．局部外敷中草药
参考答案：A
It’s a good way to control how many minutes your child talking on his cell and texting.
A．take
B．spend
C．costs
D．spends
A．F甲＜F乙
B．F甲＞F乙
C．η甲＜η乙
D．η甲=η乙
