叶为锥形叶的树种是（）
A.银杏
B.柳杉
C.黑松
D.雪松
参考答案：B
— What are you going to do this afternoon?
— My hair is too long. I want to get my hair ______. [ ]
A. cut
B. to cut
C. cuts
D. cutting
不论索引是否生效，定位到相同记录上的命令是（ ）。
A． GOTOP
B． GO BOTTOM
C． SKIP
D． GO 5
