对于特定疾病有特殊疗效的中药可以实行保护的级别为（）
A.1级
B.2级
C.3级
D.4级
E.5级
参考答案：A
1，4，8，13，19，26，( )
A．32
B．34
C．28
D．30
In an effort to plan out expenses, the Roberts family is representing its annual budget as a circle graph. Each sector of the graph is proportional to the amount of the budget it represents. If "clothes and shoes" takes up 54° of the chart, how much of the Roberts’s $20,000 annual budget is dedicated to clothes and shoes ？（）
A. $1,500
B. $3,000
C. $4,500
D. $5,000
E. $5,400
