下列属于油菜去杂去劣时期的是（）。
A.抽薹期
B.初花期
C.角果期
D.以上均正确
参考答案：B
—How is your grandma?
—She’s fine. She used to_____ TV at home after supper. But now she is used to ____out for a walk.
A．watch; go
B．watching; go
C．watching; going
D．watch; going
白炽灯一般都应用在哪些场合？
