六一散的功用是
A．祛暑清热B．祛暑利湿C．清暑生津D．清暑和中E．祛暑养阴
参考答案：B
Students should do everything they can __their study.
A．improve
B．to improve
C．improving
D．improved
直接任意球可以直接射门得分。
