月经病包括

A．月经周期、经期、经量、经色、经质的异常

B．月经周期的改变，或先期，或后期，或先后无定期

C．或伴随月经周期出现的症状为特征的疾病

D．或伴随绝经前后出现的各种症状

E．月经周期不定，量多暴下如注

Stressful environment leads to unhealthy behaviors such as poor eating habits, which _____ increase the risk of heart disease.

A．by chance

B．in other words

C．in return

D．in turn