图样上绘制斜度及锥度的符号时，要注意其方向（）
参考答案：对
Not knowing what version of iPad to choose, _____．
A．some advice was given to Barbara
B．Barbara had to consult her IT teacher
C．so Barbara had to consult her IT teacher
D．Barbara's IT teacher gave her some advice
银屑病组织病理学表现为颗粒层增厚。
