脉搏与心跳保持一致，少年儿童的脉搏一般为每分钟80次左右。
参考答案：对
—How many people will come to Beijing next year?
—It’s hard to say. ___________ people, I think.
A．Million of
B．Three millions
C．Three millions of
D．Millions of
工作许可人应对工作负责人正确说明哪些设备有压力、（）爆炸危险等。
