Laughter produces short-term changesin thefunction ...
来源：语文精选馆 3.38W
问题详情：
Laughter produces short-term changes in the function of the heart and blood circulation， heart rate and oxygen consumption.
A. increasing B. to increase C. having increased D. being increased
【回答】
A
知识点：非谓语动词
题型：选择题
