——Where is your father?——He_________ Australia and he ________ Sydney for two weeks.
A:has been to; has been in
B:has gone to ; has been in
C:has been in; has been to
D:has gone to ; has been to
理清家庭成员的关系我们可以使用( )
如图是缩手反射的反射弧结构模型图,下列说法错误的是( )