项目的形象推广，主要应放在( )进行。
A．预热期
B．强销期
C．持续销售期
D．尾盘期
参考答案：A
在括号里填上“＞”“＜”或“=”．
38000000______380000000
1234567______1300万
490×22______480×20
306×51______52×206
260÷20______480÷40
225÷25______225÷15．
—Thank you very much for giving me a hand when I was in trouble.
—Don’t mention it. I only did what anyone else in my place.
A．must do
B．might do
C．would have done
D．can have done
