题目

--Monitor?    --- I’m not monitor of our class. I __ with the teacher until the monitor is elected.        A. will just help                                       B. am just to help     C. am just helping                                           D. have just helped 答案：C 解析: 略下列现象中提到的“热”，其含义分别是什么？（1）摩擦生热，这里的“热”指    ；（2）物体吸热温度升高的“热”指    ；（3）今天天气真热的“热”指    ．