以下哪项不是继发性不稳定型心绞痛的诱发因素（）
A.甲亢
B.劳累
C.感染
D.贫血
E.心律失常
参考答案：B
The village _____ during our visit last summer is my mother's hometown. [ ]
A. that we stayed
B. we stayed
C. we stayed at
D. which we stayed
煤矿职工的职业道德规范是：（1）遵章守纪、（）；（2）热爱矿山、（）；（3）满勤满点、（）；（4）（）、珍惜资源。
