题干
_____ you know English is important, you should learn it well.
A：Since
B：For
C：Because of
D：Though
答案(点此获取答案解析）
A
_____ you know English is important, you should learn it well.
A：Since
B：For
C：Because of
D：Though
的图象如图所示，则下列结论：
，②
，③
，④
，⑤