短期和臨時(shí)通行證有效期滿，（）應(yīng)及時(shí)回收，統(tǒng)一保存，保存期滿三個(gè)月后方可銷(xiāo)毀。
A、證件查驗(yàn)單位D
暫無(wú)解析
— The manager of the factory wants to improve production a great deal, but he doesn’t spend much on technology.
— I am afraid he won ’t realize his dream. You know ________.
下列各句中，括號(hào)里的成語(yǔ)使用不正確的一句是()
While building a tunnel through the mountain,_________.
河流徑流季節(jié)的變化的主要原因是:()
The manager together with his two secretaries__________for Hong Kong to attend a meeting there.
