秦国征服巴、蜀后,在四川地区设立巴、蜀二郡,汉处又增设了 ()。
A.犍为郡
B.沈黎郡
C.广汉郡
D.汶山郡
参考答案:C
The ______ Approach believes that the learner is the center of classroom teaching and language practice is the main form of classroom teaching.
已知圆心坐标()、半径为30mm的圆方程是:(z-80)2十(y-14)2=302。
A.30,14
B.14,80
C.30,80
D.80,14