出车前对轮胎进行哪些方面的检查
A.什么也不用检查
B.轮胎有没有清洗
C.备胎在什么位置
D.轮胎的紧固和气压
参考答案:D
Jack, there is someone in the office _____would like to speak with you. [ ]
A. who
B. which
C. whom
D. what
现在越来越多的商标上都印有绿色食品标志,在购买食品时印有下列哪种标志的商品为绿色食品?( )
A.
B.
C.
D.