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.

何类型取引水项目应分析对水体富营养化的影响。