如图所示,在15N的水平拉力F作用下,木板A在水平地面匀速向右运动的过程中,物体B相对于地面静止,此时弹簧测力计的示数为3N,则B所受滑动摩擦力方向水平向____(选填“左”或“右”),A受到地面的摩擦力大小为____N。
Most of us, if we know even a little about where our food comes from, understand that every bite put into our mouths was alive.
根据意思写词语
①生:生硬。指不顾实际情况,机械地运用别人的经验,照抄别人的办法。____
②原意是说,你慢走我也慢走,你快走我也快走,你跑我也跑。比喻由于缺乏主张,或为了讨好,事事模仿或追随别人。____
My friends thought they had made things very smooth for me, but I felt there was still much to ________ with.