为避免对胃产生刺激，制药厂常把一些药物封装在淀粉制成的胶囊中给人服用．根据淀粉在消化道内的消化情况分析，其原理是（　　）

    Lang Lang was born in Shenyang, 1982. He is a ____(著名的) pianist now. When he was only three years old, he ____(显示) his talent in playing the piano. So his father took him to a piano school in Beijing and told him, “____(假如) you don't work hard, your dream won't come true.” Lang Lang was hard-working and strict with ____(他自己). At the age of five, he took part in a piano competition and ____ (赢) the first prize. He went to America to get further study when he was only thirteen, and from then on, he ____(几乎不) went back home. ____(终于), he reached the top. In 2018, Lang Lang will have two ____(音乐会) in China. Many people are ____(计划) to go there. “____(任何人) can be successful as long as you put your heart into it.” Lang Lang said.

粮食问题一直倍受关注，当前国际粮价上涨，有的国家出现缺粮现象。为了解决粮食生产和环保问题，实现农业可持续发展，应该（  ）

①合理开发海洋，寻找新的粮食资源  ②开荒种地，围湖造田，扩大粮食种植面积  ③控制人口增长，使人与自然和谐发展  ④利用现代生物技术培养高产作物品种  ⑤多用农药、化肥提高作物产量