选词填空。

    Song Xiong is my Mend．He is strong．His____are long and his feet are big．He likes running．Sometimes we____together．

Song Xiong studies in a big school．There are several foreign teachers．They speak English．One of____is Henry．He always talks with students with a____．Song Xiong learns much from him．Last Saturday,Song Xiong had a birthday party．Henry____a book for him.Song Xiong was very happy．

如图（a），长度L=0.8m的光滑杆左端固定一带正电的点电荷A，其电荷量Q=1.8×10^﹣7C；一质量m=0.02kg，带电量为q的小球B套在杆上．将杆沿水平方向固定于某非均匀外电场中，以杆左端为原点，沿杆向右为x轴正方向建立坐标系．点电荷A对小球B的作用力随B位置x的变化关系如图（b）中曲线I所示，小球B所受水平方向的合力随B位置x的变化关系如图（b）中曲线II所示，其中曲线II在0.16≤x≤0.20和x≥0.40范围可近似看作直线．求：（静电力常量k=9×10⁹N•m/C²）

噪音对人的伤害：____，损伤我们的听力。