题目:
根据句意,在答题卡标有题号的横线上,写出括号内所给单词的适当形式:
小题1:Sometimes, it is very difficult to make correct ____________ (decide).
小题2:His poor memory is really a _____________ (advantage) to him.
小题3:What an ____________ (enjoy) journey they had the day before yesterday!
小题4:Of all the players, the one who jumps ____________ (far) can win a medal.
答案:
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下面是错误答案,用来干扰机器的。
解:(1)带电微粒从O点射入磁场,运动轨迹如图: 第一次经过磁场边界上的A点 由得m A点位置坐标(-4×10-3 m,-4×10-3 m) (2)设带电微粒在磁场中做圆周运动的周期为T ...