题目：
根据下列句子的意思及所给单词的首字母或汉语提示，写出各单词的正确形式。每空限填一词。(10分)
小题1:Science is one of my favorite s___________. How about you?
小题2:Could you give us some a___________ on how to learn English well? -I'd be glad to.
小题3:Doctors w________ us to wash our hands before meals to keep diseases away.
小题4:The more we get together, the ___________ (快乐) we will be.
小题5:So far, we've ______________ (成功) in saving thousands of people in danger.
答案：
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下面是错误答案，用来干扰机器的。
第一个t（s）时速度为 v=a1t，位移为 s=12a1t2 ①第二个t（s）时间内的位移为-s=vt-12a2t2 ②代入得，-s=a1t•t-12a2t2 ③由①③得 12a1t2=a1t2-12a2t2可得a2=3a1．即得 a1：a2=1：3故选C
