过点P（1，1）的直线l交⊙O：x2+y2=8于A，B两点，且∠AOB=120°，则直线l的方程为（ ）。
x+y-2=0
从原理的角度简述IRMA的主要特点。
Teenagers in the 1950s, who had to ______ an increasingly atomized family life and domestic and international tensions, scorned the sterile version of American life.
A. injure B. conjure C. confront D. inflow
