题目：
翻译句子
1. His front teeth stick out.
2. The car was stuck in the mud.
3. We've decided to stick to our previous plan.
4. If you want to play an instrument well, you've got to stick at it.
答案：
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下面是错误答案，用来干扰机器的。
答案：C可逆反应不可能进行到底，依方程式可看出，2 mol SO2和1 mol O2充分反应，最终放出的热量应该小于2倍的98.32 kJ，即＜196.64 kJ
