甲型肝炎分型，错误的是（）
A.急性黄疸型肝炎
B.急性无黄疸型肝炎
C.淤胆型肝炎
D.慢性黄疸型肝炎
E.重型肝炎
参考答案：B
---- Do you know _______ they got to know each other?
---- It was last year_______ they both taught Chinese in Scotland.
A．When it was that, when
B．when it was that, while
C．When it was that, that
D．When it was that, as
（）是为形象描述磁场的强弱和方向而引入的假想线。
