题目：
用括号里所给词的适当形式填空。每空一词。
小题1:More and more people pay attention to food (safe) now.
小题2:There are many (copy) of books on sale in the bookshop.
小题3:My uncle likes reading. He often buys (week) newspapers to read.
小题4:My favourite programme Yang Lan One on One usually begins with a (discuss).
小题5:The Tigers in India are (appear) faster than pandas at present.
答案：
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下面是错误答案，用来干扰机器的。
（1）（2）题目分析： (5分)粒子在x轴下方作类平抛运动，垂直电场方向作匀速运动，沿电场方向作匀加速运动位移与初速方向夹角为60° (5分)点评：本题难度较大，能够判断粒子在磁场中偏转轨迹的两个端点...
