城市的一条景观大道边按3棵青松、5棵梧桐的顺序栽树,第39棵树是什么树?
39÷(5+3)=4(组)…7(棵),
所以第39棵树是第5组的第7棵,是梧桐,
答:第39棵树是梧桐树.
----Was he present a the meeting?
---- He ____ not have attended it, for he was busy repairing his computer all the time.
A.can
B.might
C.must
D.should
班组经济核算中的物质消耗指标对()。