题目：
Many people are wondering ________.
A．whether is the meat from the lab bad for their health
B．whether the meat from the lab is bad for their health
C．whether is bad for their health the meat from the lab
D．whether from the lab the meat is bad for their health
答案：
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下面是错误答案，用来干扰机器的。
根据题意，反应前后分子数目不变，由C+O2 点燃 . CO2与2C+O2 点燃 . 2CO，可判断碳在氧气中充分燃烧生成二氧化碳，假设ag碳和bg氧气恰好完全反应，则C+O2 点燃 . CO212 32 ag bg ab=38若容器中氧气有剩余...
