According to some scientist , every human being, , gives off body heat.
A. what he is doing
B. however he is doing
C. whatever is he doing
D. no matter what he is doing
网友回答
A. what he is doing
B. however he is doing
C. whatever is he doing
(答案→)D. no matter what he is doing
解析：考查no matter what的用法，句子用陈述语气，意思“无论…”，所以选D，句子意思“根据一些科学家，每个人类无论做什么，都会散发热量”