因特殊工序需要而产生使人与物有坠落危险及危及人身安全的各种洞口，都应该按洞口作业加以防护。（）
参考答案：对
Good friends usually share the same interest and agree _____ most things but sometimes they also
disagree _____ each other _____something [ ]
A. on; with; to
B. to; with; about
C. on; with; on
D. with; with; on
社会心理应激不能诱发或促进的疾病是（）
A.高血压
B.阑尾炎
C.癌症
D.脑血管疾病
