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【多选题】
列关于直线定向的说法，正确的有（）A.
直线定向指的是确定直线与标准方向之间关系的一项工作
B.
直线定向的标准方向有真子午线方向、磁子午线方向和坐标纵轴方向
C.
坐标方位角是以坐标纵轴方向作为标准方向确定的
D.
象限角可以确定直线方向
E.
建筑坐标系的纵轴方向与测量坐标系纵轴方向必须一致
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【单选题】--What were you up to when she dropped in?--I ______ for a while and ______ some reading.
A.
was playing, was going to do
B.
played, did
C.
had played, was going to do
D.
had played, did
【单选题】—What were you up to when she dropped in?—I ______ for a while and ______ some reading.
A.
was playing, was going to d0
B.
played, did
C.
had played, was going to do
D.
had played, did
【单选题】Some people suggest changing the date for the college entrance exams into ______ Saturday and Sunday of the first week of June, which I think is ______ good advice. [ ]
A.
/ ; /
B.
the; the
C.
the; a
D.
the; /
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