西方人大多以肉為主食,這些食物含有高的飽和脂肪，容易患高血脂、冠心病等。同時，由于西方人對蔬菜的攝入量不足，維生素B、C等及膳食纖維易缺乏。優(yōu)點的在動物食物中含有豐富的優(yōu)質蛋白，易于被人體吸收。熱量充足。
中國人的飲食多以植物為主，主要是以谷類為主食，不易缺VB1，膳食纖維量足，大多數的優(yōu)質蛋白來源于豆類。缺點是脂肪類太少，而且過多的膳食纖維的攝入易引起鈣等礦物質的丟失。
寫一篇介紹中西方飲食習慣差異的英語短文
There is another interesting custom in western countries about taking leave of one's host at parties.If guests want to leave,their leaving time should be 10 or 20 minutes after their first saying goodbye. And during this period,guests need to repeat it 2 or 3 times.Guest also need to show their thanks to hosts, and hosts express their hope of reunion.
