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- 1一个物体受到的重力是100N,用50N的力竖直向上提该物体,则物体受到这两个力的合力大小是()N,
- 2用分词短语改写下列各句(急!)
- 3This is my parent.(变成复数形式)
- 4"两小儿辩日"作者是谁?
- 5翻译 It gives me great pleasure to welcome our speaker.
- 6人造地球卫星要脱离地球的吸引力,进入轨道的速度
- 71.What do you t() of the movie?-It's r()interesting.
- 8i don't know the_________(mean) of this word,so i look it up in the dictionary
- 9小马虎在口算一道两位数乘10时忘记在积的末尾天上0,结果比真确的积少306,你知道真确的积是多少吗?
- 10I thought __ very important to read english every day.A it B its C it is D that 为什么选A?