问题
选择题
Every individual _________ in a continually changing world of experience of which he or she is the center.
A．exists
B．will exist
C．is existing
D．has existed
答案
答案：A
本题考查时态。根据句意：每一个人都存在于一个以自我为中心、阅历不断变化的世界里。可知用一般现在时，选A。