An adolescent client immobilized in a spica cast complains of having trouble breathing after meals. Which of the following actions would be best

A. Encourage the client to drink more between meals.
B. Teach the adolescent purse&lip breathing.
C. Give the client a laxative after meals.
D. Offer the client small feedings several times a day.

电信行业的发展必须打破垄断，电信行业的垄断( )。

A．降低了电信业的市场价格

B．提高了电信业的服务质量

C．制约了电信业的健康发展

D．扩大了电信业的市场需求