拔牙的禁忌证不包括
A．不稳定心绞痛
B．充血性心力衰竭
C．1年前发生过心肌梗死
D．未控制的高血压或心律失常
E．恶性肿瘤范围内的病牙
参考答案：C
根据句意和首字母填上适当的单词。
1. My uncle and aunt are ______ (都) workers.
2. We brush (刷) our t______ every day.
3. What's the d______ today? It's October 15.
4. It's not p______ to talk in class.
5. We can get books from the school l______.
6. The fourth day of a week is ______.
每台转向架均设有（）个高度调整阀。
A.1
B.2
C.3
D.4
