题目

Tom ____________ playing the piano than me.A. is better for B. is better withC. is better at D. is better to 答案:【答案】C【解析】句意:汤姆比我擅长弹钢琴。根据be good at擅长,be good for对---有好处,be good with和---相处的好,be good to对---好;根据句意故选C如图,在Rt△ABC中,∠C=90°,BC=6 cm,CA=8 cm,动点P从点C出发,以每秒2 cm的速度沿CA、AB运动到点B,则从C点出发多少秒时,可使S△BCP=S△ABC?
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