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- 1()9.Please don't leave without___the lights.A.turn off B.to turn off C.turning off D.turn on
- 2我感觉悲伤和孤单用英语怎么说?
- 3如果点B在A点的北偏东20度,C在点A的南偏西80度,那么角BAC的度数是多少?
- 4You must finish the homework before 5 o'clock 改为被动语态
- 5从甲地到乙地,甲车行了40分钟,乙车行了1/4小时,乙车的速度比甲车快百分之几?
- 6All of us think_______ important to protect our Earth now.A、that B、this C、it D、how
- 7英语翻译
- 8核糖体合成的肽链怎么进入内质网?
- 9Thanks for ____ (join) our music club.是不是填joining?
- 10已知向量OA=(λsina,λcosa)(λ≠0)向量OB=(cosb,sinb),且a+b=4求OA,OB夹角