全陪在上团前应做好必要的物质准备，携带必备的证件和有关资料。
参考答案：对
In order to improve English, __________.
A．it is necessary to need a lot of practice.
B．a lot of practice is needed.
C．you need a lot of practice
D．it needs a lot of practice.
下列哪项是慢性胰腺炎最突出的症状（）.
A.呕吐
B.发热
C.腹部包块
D.便秘
E.腹痛
