题干
I was writing a diary ______ my brother was watching TV yesterday evening.
A：before
B：after
C：until
D：while
答案(点此获取答案解析）
D
I was writing a diary ______ my brother was watching TV yesterday evening.
A：before
B：after
C：until
D：while
表示从树突到细胞体再到轴突及末梢，则下列叙述错误的是