具有疏风润燥，凉血泄热功能的药是（）
A．山楂调中丸
B．开胃山楂丸
C．葛根芩连微丸
D．养胃舒胶囊
E．龙荟丸
参考答案：B
当太阳直射在20°S时，北京（39°N）的正午太阳高度值为（ ）
A．41°
B．31°
C．71°
D．25°
Alexander tried to get his work _______in the medical circles.
A．to recognize
B．recognizing
C．recognize
D．recognized
