【今日VOA】听听我老人家的声音是不是很性感？咔咔

昨天跟一个高手学发音，也不知道是不是因为天气还是练得太狠了，今早上发现嗓子有点儿哑，听着是不是很美味？哈哈，我也自恋上了。

This is SCIENCE IN THE NEWS in VOA Special English. I'm Shirley Griffith.

And I'm Bob Doughty. Spring has returned to the United States. The sky is blue, the grass is green and many plants are flowering. Spring can be a beautiful time of year. But it is especially troublesome for people with asthma. High pollen levels can keep asthma sufferers from enjoying spring flowers and the weather.

May is Asthma Awareness Month in the United States. And May first is World Asthma Day. The Global Initiative for Asthma, or GINA, organizes the event every year. GINA is a joint effort of the World Health Organization and the National Heart, Lung and Blood Institute of America's National Institutes of Health.