The sum of four consecutive odd positive integers is always ？（）

A.an odd number

B.divisible by 4

C.a prime number

D.a multiple of 3

E.greater than 24

毛果芸香碱可以

A．选择性激动M胆碱受体

B．对眼和胃肠道平滑肌兴奋作用强

C．对眼的作用缓慢而持久

D．适用于闭角型和开角型青光眼的治疗

E．可松弛瞳孔开大肌，引起缩瞳