“Can I have a glass of hot water?” This is a very common question for Chinese customers in a restaurant. But ____ you go abroad, you may find that meals in the West tend to come with tall glasses of ice water.

    For most Chinese people,____ (drink) hot water is part of everyday life. It is believed that water of a warm temperature (25-30 C) is good for people's health,____ (especial) for the stomach.

    But for many Western people, they drink cold water even in winter. One possible reason is ____ in Western countries people can drink water directly from the tap, rather than having to boil ____. And it's also normal to jump into a cold shower after exercise,____ (bring) the heart rate down.

    However, there is one common thing ____(encourage) in both the East and the West: One ____ cool down by drinking a hot drink in summer. Because sweating is a good way to cool off in summer, hot drinks make you hotter and you begin to sweat.

    Of course, it doesn't matter if you drink hot ____ cold water. The more comfortable your body feels, the ____(good) it is.

人口政策是一个国家根据本国人口发展状况而采取的相应政策措施，人口政策会随着本国人口发展的实际情况作适当的调整。刚刚解放的新中国实行鼓励生育的政策，那时一个家庭四五个孩子很正常，1982 年，计划生育确定为基本国策，提倡一对夫妇只生育一个孩子；2013 年 11 月启动实施一方是独生子女的夫妇可生育两个孩子的 （单独二孩）政策；2016 年 1 月 1 日起全面实施一对夫妇可生育两个孩子政策。读图“我国1949-2014 年出生人口统计图” 有不少学者曾预言 2010 年尤其 2013 年以后会出现第四次婴儿潮，理由可能是（    ）

①人口惯性             ②单独二孩政策实施       ③经济快速发展       ④医疗条件极大改善