The scientists predict that if present trends , women in 400 years will be 2cm shorter and have healthier hearts．
A. will continue
B. continue
C. are continued
D. will be continued
网友回答
A. will continue
(答案→)B. continue
C. are continued
D. will be continued
解析：if引导的真实条件状语从句常用一般现在时表示将来的概念，而主句要用将来时。