下列各因素中,属于影响传染病流行过程的自然因素是()
A.人口密度
B.气候、地理
C.宗教信仰
D.经济、文化
E.生产及生活条件
参考答案:B
()食物可引发婴儿患爆发性等荨麻疹。
A、牛奶、蛋类
B、巧克力、牛奶
C、豆类、贝类
D、水果类
—Could you tell me ?
– In more than 5 months.
A.how soon the Hangzhou Road Bridge will be built
B.how long the Hangzhou Road Bridge will be built
C.how long will the Hangzhou Road Bridge be built
D.how soon will the Hangzhou Road Bridge be built