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The Halloween party e_____ at 11pm. It was too late when we got home.
7个月前
喷瓜有雄株、雌株和两性植株,G基因决定雄株,g基因决定两性植株,g﹣基因决定雌株.G对g、g﹣是显性,g对g﹣是显性,如:Gg是雄株,gg﹣是两性植株,g﹣g﹣是雌株.下列分析正确的是( )
10个月前
We _______ finish it ahead of time, though it was such a tough task.
1年前
已知cosα=-3分之1,且α∈(2分之π,π),求sin2α,cos2α,tan2α.
1年前
1年前