①____ A.light B.computer C.blackboard
②____ A.wall B.near C.floor
③____ A.window B.really C.door
④____ A.help B.have C.head
⑤____ A.where B.white C.green
He said he was very sorry because it was _______ his power to make the final decision. _______, I had to turn to others for help.
有经济学家认为,如果一国的消费者是成熟、复杂和苛刻的话,会迫使本国企业努力提高产品质量并不断创新,从而赢得国际竞争的优势。从哲学角度上看,消费者和企业之间( )
首次把人归入哺乳纲灵长目的科学家是( )