治疗肺肾阴虚型经行吐衄,最佳方剂是:()
A.清肝引经汤
B.清经散
C.逍遥散
D.顺经汤
E.定经汤
参考答案:D
定义运算(a,b)=a2+b-1,例如把(3,-2)放入其中,就会得到32+(-2)-1=6.现将实数对(m,-2m)放入其中,得到实数2,则m=______.
Mr Philip has made ______ survey on students’ lunchtime, and ______ survey shows us a lot of problems.
A.an; an
B.the; the
C.a; the
D.the; a