Laughter produces short-term changes in the function of the heart and blood circ

题干

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

上一题下一题 0.65难度单项选择更新时间:2017-05-22 06:11:16

小学学科试题库

初中学科试题库

高中学科试题库