________ to the papers is restricted to Defense Department personnel only.
C
暂无解析
Weregretto________thatitmaynotbepossibletodealwitheveryrequest.
Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.
Othersarguethatsincetheearthhasenduredalongstringoficeagesinthelasttwomilliontothreemillionyears,anywarmingis________tobetemporary.
She________hernervousnesstotheimportanceoftheinterview.
Wemust______thattheexperimentiscontrolledasrigidlyaspossible.