下列句子中划线成语使用恰当的一项是( )
A:小强的动人事迹经过老师的大肆渲染,成了校园里的热门话题。
B:他们俩操作计算机非常熟练,已经达到了为所欲为的程度。
C:我们必须正确看待自己,既不能自高自大,也不能自暴自弃。
D:小陆真是别有用心,制作的飞机模型与众不同,令人叫绝。
呼吸时,氧气由肺泡进入血液的原因是( )
go cooked was in on last goes visited washed cleaned with next
My mother ____ busy last weekend. She ____ my grandma on Saturday morning. They ____ noodles together. ____ the evening, she ____ the clothes. She often ____ to the park, but she ____ my bedroom last Sunday. In the afternoon, she went shopping. She watched TV ____ me in the evening. She was very tired last weekend. So I'll help my mother do housework ____ weekend.
如图,将直线y=﹣x沿y轴向下平移后的直线恰好经过点A(2,﹣4),且与y轴交于点B,在x轴上存在一点P使得PA+PB的值最小,则点P的坐标为____.