轻性心理障碍的共同特点有()
A.社会适应基本正常
B.主动寻求帮助
C.对自身变化深为关切
D.情感体验简单
E.思维内容复杂,荒诞
参考答案:A, B, C
—Were you often late for school last term, Tom?
—_____. I got to school early every day.[ ]
A. Always
B. Usually
C. Sometimes
D. Never
x,y为任意实数,M=4x2+9y2+12xy+8x+12y+3,则M的最小值为( )
A.-2
B.-1
C.0
D.3