道床的断面呈（）形。
A.梯
B.长方
C.正方
D.棱形
参考答案：A
My father is a doctor. My brother is a doctor, ________. [ ]
A. and
B. too
C. either
D. so
咖啡的适当温度在冲泡的刹那间为（）℃。
A.80
B.81
C.82
D.83
