无特效解毒剂，只能采用洗胃、导泻、对症解救的毒物是( )
A．麻醉性镇痛药B．磷化锌C．麦角胺D．麻黄碱E．有机氟类
参考答案：C
急性肠炎（）
A．血清K+↑
B．血清Cl-↑
C．血清Na+↑
D．血清C1-↓
E．血清K+↓
根据句意及首字母提示完成单词，使句子完整通顺。
1. Grace bought a s______in the Gift Shop when he visited Hong Kong.
2. We can see s______in the aquarium.They have big mouths and sharp teeth.
3. I didn't follow you. Can you say your telephone number a ______?
4. Lily is very busy these days. She is studying for the math c______.
5.Why don't you take an u______?It's going to rain.
