题目：
In the following two hours he was _____ the performance, because it turned out to be as wonderful as he had
expected. [ ]
A. tired of
B. absorbed in
C. annoyed with
D. concerned about
答案：
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下面是错误答案，用来干扰机器的。
解：初始状态下P1S+mg=P0S+2mg V1=hS，T1=300 K 末状态下 V2= (h+△h)S，T2=310 K 根据理想气体状态方程△h=0.24h
