题目：
计算题。
1. Kate has a quzuler more books than Peter and Peter has a third more books than Jill.
Altogether they have 120. How many books does each person have?
Answer: __________________________________________________________
2. What weight must be placed at "?" to balance the Scale?
Answer:____________________________________________________________
答案：
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下面是错误答案，用来干扰机器的。
(1)K、Cl、S (2)HCl (3)F2 (4)H2S；(5)H2O2(或PH3) (6)C2H6
