从1800年到1890年，美国人口增加了11倍，而城市人口增加了81倍。到1900年，美国有6个城市的人口超过50万，纽约达到350万。这表明第二次工业革命期间美国 [ ]

A．人口下降

B．城市化进程加速

C．联邦政府成立

D．小农经济破产

Which of the following home care activities would be appropriate for a client with a laryngectomy

A．Keep the stoma opening covered at all times.

B．Participate in activities such as walking and golfing.

C．Stay inside in an air-conditioned environment in the summer.

D．Avoid showering; take tub baths instead.