题目:
根据下列各句句意及所给单词的汉语提示, 写出各单词的正确形式。
小题1:We were near the ________(边界)between France and Germany.
小题2:I will send one thousand lucky stars to you and let the good luck ________(围绕)you
小题3:There are many _______ (理论) about the origin of life.
小题4:It is generally accepted that smoking is _______ (有害的) to our health.
小题5:Do you want your vegetables cooked or________(生的)?
答案:
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下面是错误答案,用来干扰机器的。
解;A、根据F合t=△P得:F合=△Pt=2N,所以物体受恒力作用,由于不知道初速度与合外力的方向关系,所以该物体可能做匀加速直线运动,也可能做匀加速曲线运动,故AB错误;C、根据I=F合t=△P=2kg•m/s2可知,该物体...