（）是构成汉语方言在地理上使用场域的三个层级。
A.普通话
B.地区共同语
C.地点方言
D.地区方言
参考答案：A, B, C
—When were you born?
一I was born ______ the morning of June 18th, 1975. [ ]
A. in
B. on
C. at
D. to
《素问·阴阳应象大论》认为，热盛则（）
A.动
B.干
C.肿
D.浮
E.濡泻
