The skirt ________ is made of silk is very expensive. I can't afford it.
A：what
B：it
C：that
D：/
两平行直线被第三条直线所截，同位角的平分线（ ）
If x>100 then
Y=12
① x>60 then
Y=8
Else
y=5
②
该程序段中，①处填写的内容为____；②处填写的内容为____。
