砂砾坝体填筑单元工程中标准项目之一是：坝体填筑必须在前一填筑层验收合格后进行。这一项目称为（）。
A、保证项目A
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OneofthedisadvantagesintheGrammar-TranslationMethodisthatthetextsaretakenfrom_____,thelanguageofwhichdoesn'toftenmeetthepracticalneedsofthelearners.
新闻事业最终形成的标志
Thegovernmentcalledoutpolicementosuppresstheriot.
________inthought,healmostranintothecarinfrontofhim.
Thefirsttaskofabrochureisto_______.
