不寐的病机特点为
A．阳盛阴衰，阴阳失交
B．阴盛阳衰，阴阳失交
C．胃气不和，夜卧不安
D．阳不交阴，心肾不交
E．以上均不对
参考答案：A
My English teacher has given me so much help that I really want to do something for him _____. [ ]
A. in return
B. in fact
C. in surprise
D. in turn
The people ______ helped us build our hometown are from Beijing. [ ]
A. which
B. whom
C. who
