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Hegotuptoolateandthelastbus.
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TomtogetherwithhisparentsoftensomecleaningintheirhouseonSundays.A.do B.does C.is D.are
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如图所示将一个鸡蛋放入水中鸡蛋下沉则鸡蛋的密度填大于小于或等于水的密度．在鸡蛋浸没在水中后的下沉过程中鸡蛋受到的压强受到的浮力填变大变小或不变．
一个小球悬浮在容器内的盐水中如果不断往容器中加水则该球将ρ盐水＞ρ水A．上浮至水面B．下沉至水底C．仍然悬浮D．向下沉后上浮
Weshouldadvisepeopletostopusingtakeawaychopsticks.wood
Igotabikeashisbirthdaypresentonhisbirthday.five
It'sverysillyyouhim.A.for;tohelp B.for;helping C.of;tohelp D.of;helping
Pleasereadsothateveryonecanhearyouclearly.
Youdidn'tknowIwantedtoseeyou.It'sayearsinceIlastsawyou.A.howoften B.howmanyC.howmuch D.howfar
Needlesstosayit'sforJimtodothemostbutgettheleast.fair
饺子在古代被称为娇耳是我国传统美食之一饺子刚下锅时沉在水底排开水的体积为V1煮熟后会漂浮在水面上排开水的体积为V2此时受到的浮力为F重力为G下列关系正确的是A．F=GB．V1＞V2 C．F＞GD．V1＞V2
-WouldyouliketogotoTibetbyplaneorbytrain?-.A.YesI'dloveto. B.NoIwouldn’tliketo.C.Iwouldn'tliketogothere. D.Bytrain.
Duetothesecond-childpolicymorewillbebornthisyear.baby
如图所示ab是两种物质质量与体积的关系图象分别用ab两种物质制成体积相等的甲乙两实心物体浸没在水中．松手稳定后
Ifyougooutalonewithouttellingyourparentstheywillbe.worry
Mikewilllearnswimmingnomatterhowmuchit.A.costs B.takes C.spends D.pays
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小明探究浮力的大小跟哪些因素有关时用水和另一种液体做了如图所示的实验．请仔细观察图并回答下列问题忽略绳的体积和重力1比较图C和图D可知物体受到的浮力大小与有关．2比较图B和可知物体受到的浮力大小与排开液体的体积有关．3在图E中物体受到的浮力是N．4图B中水对杯底的压强物体放入前水对杯底的压强比较图C和D可知水对烧杯底部的压强液体对烧杯底部的压强．5聪明的小明还通过以上实验数据计算出物体的密度是kg/m3液体的密度是kg/m3．
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