许多教师认为,()是热爱学生的较高层次的标准。
参考答案:尊重学生
—Alice, why didn't you come yesterday?
— I _______, but I had an unexpected visitor. [ ]
A. had
B. would
C. was going to
D. did
影响人类健康的四大因素是
A.细菌、病毒、寄生虫和自身免疫
B.自然环境、家庭状况、医疗水平和个体免疫水平
C.环境、生物遗传、行为生活方式和卫生服务
D.公共场所卫生、个人心理卫生、社会行为方式和医疗卫生服务
E.宿主、环境、病因、行为