下列患者拔牙前应使用抗生素（）
A.先天性心脏病患者
B.风湿性心脏病患者
C.甲亢患者
D.糖尿病患者
E.肝脏病患者
参考答案：A, B, C, D
根据句意及首字母的提示写出正确的单词。
1. Please be careful when you cross a busy street,because it's very d_____.
2. There is an e_____ in each of these tall buildings. So you can go up and down easily.
3. It's not very bad, at 1_____ the weather is sunny today.
4. Next Sunday is my twelfth birthday. I am going to i_____ my close friends to come
to my birthday party.
5. The waves are washing the s_____ on shore strongly when typhoon comes.
资本市场是融通长期资金的市场，它又可以进一步分为（）。
A．股票市场和债券市场
B．证券市场和货币市场
C．短期资金市场和长期资金市场
D．中长期信贷市场和证券市场
