题目

Both men and women are living longer these days in industrialized countries. 36  In general, they can expect to live six or seven years more than men. One reason for this is biological. One important biological factor that helps women live longer is the difference in hormones between men and women.   37  Between the ages of about 12 and 50, women produce hormones that are involved in fertility(生育能力). These hormones also have a positive effect on the heart and blood flow. In fact, women are less likely to have high blood pressure or to die from heart attacks. 38   They help=___________．