A:是光的反射形成的虚像
B:是光的折射形成的虚像
C:是光沿直线传播形成的影子
D:“水中倒彩”比岸上景物大一些
设函数f(x)=1+log22-x,x<12x-1,x≥1,则f(﹣2)+f(log212)=( )
She said that she would do _______ she could __________ her daughter laugh.
昆虫的翅均生在胸部,气门均生在腹部.(判断对错)