问题
选择题
— I have great _______ in learning Maths and I’m so worried. Could you help me?
— Sure. I’ll be glad to.
A．difficulty
B．interest
C．fun
D．joy
答案
答案：A
根据后文的内容可知是在…方面有些困难，have great difficulty in doing sth ，故选A
缺失，
基牙，
连续杆，舌杆和连续杆连接可摘局部义齿修复