填空:Helen is slim with f（ ）（金色）hair.She is p（ ）.She looks like her father.He father is

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• helen一家的全家福 helen is s____________ with f____________hair.she is p____________.she looks like her f____________.her father is t____________ and t____________.he is an e____________,withg____________.she is a n____________.she works at a h____________.
• 填空:Helen is slim with f（ ）（金色）hair.She is p（ ）.She looks like her father.He father is连下去tall and t( ).Her mother is s( ) and fat,with g( ).
• 填空:Helen is slim with f（ ）（金色）hair.She is p（ ）.She looks like her father.He father is
• 一个带正电的粒子在垂直于匀强磁场的平面内沿逆时针方向做匀速圆周运动（忽略重力），当磁场方向不变、大小突然从B1增加到B2时，粒子的动能将_（增大、不变、减小）
• 已知点M(a,a-2)的关于原点的对称点在第三象限,则a的取值范围是