回答下列问题:
“世界是一棵树,人是它的果实。”这句谚语启示我们( )
读安第斯山脉东西两侧风向示意图,并结合东西两侧A,B两个城市的气候统计图,完成下列问题.
It's rather windy today. Put on some warm clothes, _________ you'll catch a cold.