思维定式包括（）。
A、权威定势
B、从众定势
C、书本定势
D、经验定势
参考答案：A, B, C, D
从事房地产估价，首先要有房地产估价业务。归纳起来，房地产估价业务
A.被动接受
B.主动争取
C.自有自估
D.朋友介绍
Although some unexpected difficulties have ________ in the process, we are confident that we can handle them.
A．risen
B．raised
C．arisen
D．aroused
