Directions: The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Spell out the missing letters of the word. There are 15 million of us who fly across multiple time zones every year, with 500,000 of us in the air at any given moment. And for those of us who fly more than a couple of time zones from home jet lag can be a serious challenge.
Millions of people s from jet lag every year.
正确答案：uffer
题目解析
每年有1500万人飞越多个时区，在任何时刻我们都有50万的人在空中飞行。对于那些从家飞行超过两个时区的人来说，时差反应是一个严峻的挑战。suffer from 遭受。
from jet lag every year.