下列岩层中露头宽度与岩层真厚度相等的是（）。
A、水平岩层
B、倾斜岩层
C、直立岩层
D、原始倾斜岩层
参考答案：C
与圆x2＋(y－2)2＝1相切，且在两坐标轴上截距相等的直线共有 ( )
A．2条
B．3条
C．4条
D．6条
(2014·长安五校一模)The lawyer advised Tom to drop the________since he had little chance to win.
A．affair
B．case
C．incident
D．event
